BACKGROUND Cauda equina syndrome(CES)is characterized by a group of symptoms that may be caused by inflammation,spinal cord compression,venous congestion,or ischemia.This syndrome is commonly an indication for surgica...BACKGROUND Cauda equina syndrome(CES)is characterized by a group of symptoms that may be caused by inflammation,spinal cord compression,venous congestion,or ischemia.This syndrome is commonly an indication for surgical intervention but has not been determined as a postoperative complication following surgery for lumbar spine disease.CASE SUMMARY To report the case of a 54-year-old male patient who had CES following spinal surgery,with no obvious compression lesions found during re-exploration,suggesting that vascular insufficiency may have contributed to the condition.Furthermore,a series of urodynamic studies on bladder recovery patterns in such complications have also been investigated.CONCLUSION Postoperative CES requires urgent imaging and exploration to rule out compression;noncompressive cases,including vascular insufficiency may performed conservative management.展开更多
Objective:To investigate the diagnostic value of magnetic resonance imaging(MRI)in patients with Modic changes and endplate sclerosis of the lumbar spine.Methods:A total of 66 patients with lumbar spine diseases who u...Objective:To investigate the diagnostic value of magnetic resonance imaging(MRI)in patients with Modic changes and endplate sclerosis of the lumbar spine.Methods:A total of 66 patients with lumbar spine diseases who underwent MRI and CT diagnostic examinations at the hospital from May 2024 to April 2025 were included in this study.The MRI findings of Modic changes were compared between Type I and Type II patients,and the presence or absence of endplate sclerosis signals and the HU value ratio on CT were analyzed.The pathological characteristics of Modic changes in Type I and Type II patients were observed.The imaging features of Modic changes in patients with lumbar spine diseases were analyzed.Results:Modic changes were present in 34 patients,with a total of 204 endplates evaluated,of which 74 were affected.MRI classification showed:Type I in 8 cases(10.81%),Type I/II mixed in 10 cases(13.51%),Type II in 51 cases(68.92%),and Type II/III mixed in 5 cases(6.76%).In CT reconstruction images,26 endplates with Modic changes on MRI showed sclerosis in the vertebral body,presenting high-density sclerotic features.These sclerotic areas did not exhibit distinct signal characteristics on MRI but pathologically demonstrated Type II Modic changes concurrently with fatty degeneration and sclerosis;In patients with Modic changes of Type I and Type II,regardless of the presence or absence of endplate sclerosis,the sagittal T1/T2 signal intensity ratio showed no statistically significant difference(P>0.05).However,the HU value ratio in Type II changes with sclerotic regions(2.74±0.61)was significantly higher than that in regions without sclerosis(1.16±0.23),with a statistically significant difference(P<0.05).Conclusion:CT reconstruction images of patients with lumbar Modic changes clearly demonstrate endplate sclerosis,a phenomenon closely associated with the bone marrow repair process.MRI has limited sensitivity for detecting sclerosis,potentially due to the following factors:first,differences in the radiographic characterization of endplate mineral content;second,the specific influence of different Modic types on signal intensity.This suggests that MRI classification should be combined with CT features for comprehensive interpretation.展开更多
BACKGROUND The association between body mass index(BMI)and bone mineral density(BMD)has shown inconsistent results,varying by sex and skeletal site.Despite normal or elevated bone mass,individuals with type 2 diabetes...BACKGROUND The association between body mass index(BMI)and bone mineral density(BMD)has shown inconsistent results,varying by sex and skeletal site.Despite normal or elevated bone mass,individuals with type 2 diabetes have an increased risk of hip and vertebral fractures.AIM To assess lumbar spine trabecular volumetric BMD(vBMD)across different BMI categories in individuals with and without diabetes.METHODS This cross-sectional study included 966 men over 50 years old and 1001 postmenopausal women from the Pinggu Metabolic Disease Study.The vBMD of lumbar vertebrae 2 through 4 was measured using quantitative computed tomography.Total adipose tissue,subcutaneous adipose tissue(SAT),visceral adipose tissue(VAT),and lumbar skeletal muscle area were also quantified.RESULTS In men with obesity(P=0.038)and overweight(P=0.032),vBMD was significantly higher in the diabetes group compared to non-diabetic men.After adjusting for age and sex,no significant saturation effect between BMI and BMD was found in participants with diabetes or in women without diabetes.However,a BMI threshold of 22.33 kg/m²indicated a saturation point for vBMD in nondiabetic men.Independent predictors of vBMD in men included age(r=-0.387,P<0.001),BMI(r=0.130,P=0.004),and VAT(r=-0.145,P=0.001).For women,significant predictors were age(r=-0.594,P<0.001),BMI(r=0.157,P=0.004),VAT(r=-0.112,P=0.001),and SAT(r=-0.068,P=0.035).CONCLUSION The relationship between BMI and trabecular vBMD differs in individuals with and without diabetes.Overweight and obese men with diabetes exhibit higher vBMD.展开更多
AIM: To evaluate two simple angle measurements for predicting lumbosacral transitional vertebra (LSTV) in magnetic resonance imaging (MRI) studies of the spine. METHODS: The lumbar spine MRI studies of 50 subjects wit...AIM: To evaluate two simple angle measurements for predicting lumbosacral transitional vertebra (LSTV) in magnetic resonance imaging (MRI) studies of the spine. METHODS: The lumbar spine MRI studies of 50 subjects with LSTV and 50 subjects with normal lumbosacral anatomy were retrospectively evaluated. In each study, the mid-sagittal T2-weighted image was used to measure the angle formed by a line parallel to the superior surface of the sacrum and a line perpendicular to the axis of the scan table (A-angle), as well as the angle formed by a line parallel to the superior endplate of the L3 vertebra and a line parallel to the superior surface of the sacrum (B-angle). RESULTS: The total study population consisted of 100 subjects (46 males, 54 females, 51 ± 16 years old). There were no differences in age and sex between the two groups. Both A-angle and B-angle were significantly increased in subjects with LSTV compared to controls (P < 0.05). The optimal cut-off values of A-angle and B-angle for the prediction of LSTV were 39.8° (sensitivity = 80%, specificity = 80%, accuracy = 83%; 95% confidence interval = 74%-89%, P = 0.0001) and 35.9° (sensitivity = 80%, specificity = 54%, accuracy = 69%; 95% confidence interval = 59%-78%, P = 0.0005), respectively. CONCLUSION: On sagittal MR images of the lumbar spine, an increased A-angle and/or B-angle should alert the radiologist to the presence of LSTV.展开更多
BACKGROUND The response to axial physiological pressure due to load transfer to the lumbar spine structures is among the various back pain mechanisms.Understanding the spine adaptation to cumulative compressive forces...BACKGROUND The response to axial physiological pressure due to load transfer to the lumbar spine structures is among the various back pain mechanisms.Understanding the spine adaptation to cumulative compressive forces can influence the choice of personalized treatment strategies.AIM To analyze the impact of axial load on the spinal canal’s size,intervertebral foramina,ligamenta flava and lumbosacral alignment.METHODS We assessed 90 patients using three-dimensional isotropic magnetic resonance imaging acquisition in a supine position with or without applying an axial compression load.Anatomical structures were measured in the lumbosacral region from L1 to S1 in lying and axially-loaded magnetic resonance images.A paired t test atα=0.05 was used to calculate the observed differences.RESULTS After axial loading,the dural sac area decreased significantly,by 5.2%on average(4.1%,6.2%,P<0.001).The intervertebral foramina decreased by 3.4%(2.7%,4.1%,P<0.001),except for L5-S1.Ligamenta flava increased by 3.8%(2.5%,5.2%,P<0.001),and the lumbosacral angle increased.CONCLUSION Axial load exacerbates the narrowing of the spinal canal and intervertebral foramina from L1-L2 to L4-L5.Cumulative compressive forces thicken ligamenta flava and exaggerate lumbar lordosis.展开更多
AIM: To compare minimally invasive(MIS) and open techniques for MIS lumbar laminectomy, direct lateral and transforaminal lumbar interbody fusion(TLIF) surgeries with respect to length of surgery, estimated blood loss...AIM: To compare minimally invasive(MIS) and open techniques for MIS lumbar laminectomy, direct lateral and transforaminal lumbar interbody fusion(TLIF) surgeries with respect to length of surgery, estimated blood loss(EBL), neurologic complications, perioperative transfusion, postoperative pain, postoperative narcotic use, and length of stay(LOS).METHODS: A systematic review of previously published studies accessible through Pub Med was performed. Only articles in English journals or published with English language translations were included. Level of evidence of the selected articles was assessed. Statistical data was calculated with analysis of variance with P < 0.05 considered statistically significant.RESULTS: A total of 11 pertinent laminectomy studies, 20 direct lateral studies, and 27 TLIF studies were found. For laminectomy, MIS techniques resulted in a significantly longer length of surgery(177.5 min vs 129.0 min, P = 0.04), shorter LOS(4.3 d vs 5.3 d, P = 0.01) and less perioperative pain(visual analog scale: 16 ± 17 vs 34 ± 31, P = 0.04). There is evidence of decreased narcotic use for MIS patients(postoperative intravenous morphine use: 9.3 mg vs 42.8 mg), however this difference is of unknown significance. Direct lateral approaches have insufficient comparative data to establish relative perioperative outcomes. MIS TLIF had superior EBL(352 mL vs 580 mL, P < 0.0001) and LOS(7.7 d vs 10.4 d, P < 0.0001) and limited data to suggest lower perioperative pain.CONCLUSION: Based on perioperative outcomes data, MIS approach is superior to open approach for TLIF. For laminectomy, MIS and open approaches can be chosen based on surgeon preference. For lateral approaches, there is insufficient evidence to find noninferior perioperative outcomes at this time.展开更多
BACKGROUND Patients undergoing lumbar spine surgery usually suffer severe pain in the postoperative period.The erector spinae plane block(ESPB),first published in 2016,can anesthetize the ventral and dorsal rami of th...BACKGROUND Patients undergoing lumbar spine surgery usually suffer severe pain in the postoperative period.The erector spinae plane block(ESPB),first published in 2016,can anesthetize the ventral and dorsal rami of thoracic nerves and produce an extensive multi-dermatomal sensory block.AIM To assess whether bilateral ultrasound-guided ESPB at a lower thoracic level could improve pain control and quality of recovery in patients undergoing lumbar spine surgery.METHODS A total of 60 patients aged 18-80 years scheduled to undergo lumbar spine surgery with general anesthesia were randomly assigned to two groups:ESPB group(preoperative bilateral ultrasound-guided ESPB at T10 vertebral level)and control group(no preoperative ESPB).Both groups received standard general anesthesia.The main indicator was the duration to the first patient controlled intravenous analgesia(PCIA)bolus.RESULTS In the ESPB group,the duration to the first PCIA bolus was significantly longer than that in the control group(h)[8.0(4.5,17.0)vs 1.0(0.5,6),P<0.01],and resting and coughing numerical rating scale(NRS)scores at 48 h post operation were significantly lower than those in the control group(P<0.05).There was no significant difference between the two groups regarding resting and coughing NRS scores at 24 h post operation.Sufentanil consumption during the operation was significantly lower in the ESPB group than in the control group(P<0.01),while there was no significant difference between the two groups regarding morphine consumption at 24 or 48 h post operation.In the ESPB group,Modified Observer’s Assessment of Alertness/Sedation score within 20 min after extubation was higher and duration in the post-anesthesia care unit was shorter than those in the control group(P<0.01).CONCLUSION In patients undergoing lumbar spine surgery,ultrasound-guided ESPB at a lower thoracic level improves the analgesic effect,reduces opioid consumption,and improves postoperative recovery.展开更多
For the analysis of spinal and disc diseases,automated tissue segmentation of the lumbar spine is vital.Due to the continuous and concentrated location of the target,the abundance of edge features,and individual diffe...For the analysis of spinal and disc diseases,automated tissue segmentation of the lumbar spine is vital.Due to the continuous and concentrated location of the target,the abundance of edge features,and individual differences,conventional automatic segmentation methods perform poorly.Since the success of deep learning in the segmentation of medical images has been shown in the past few years,it has been applied to this task in a number of ways.The multi-scale and multi-modal features of lumbar tissues,however,are rarely explored by methodologies of deep learning.Because of the inadequacies in medical images availability,it is crucial to effectively fuse various modes of data collection for model training to alleviate the problem of insufficient samples.In this paper,we propose a novel multi-modality hierarchical fusion network(MHFN)for improving lumbar spine segmentation by learning robust feature representations from multi-modality magnetic resonance images.An adaptive group fusion module(AGFM)is introduced in this paper to fuse features from various modes to extract cross-modality features that could be valuable.Furthermore,to combine features from low to high levels of cross-modality,we design a hierarchical fusion structure based on AGFM.Compared to the other feature fusion methods,AGFM is more effective based on experimental results on multi-modality MR images of the lumbar spine.To further enhance segmentation accuracy,we compare our network with baseline fusion structures.Compared to the baseline fusion structures(input-level:76.27%,layer-level:78.10%,decision-level:79.14%),our network was able to segment fractured vertebrae more accurately(85.05%).展开更多
Objective： To observe the tested results of the segmental range of motion （ROM） of lumbar spine by charge couple device （CCD）-based system for 3-dimensional real-time positioning （CCD system）, and to analyze it...Objective： To observe the tested results of the segmental range of motion （ROM） of lumbar spine by charge couple device （CCD）-based system for 3-dimensional real-time positioning （CCD system）, and to analyze its clinical significance. Methods： Seven patients with lumbar joint dysfunction and 8 healthy subjects were tested twice by the CCD-based system with an interval of 10 min. Results： The ROM of the patients was obviously lesser than that of the healthy subjects. The measuring data of segmental ROM of lumbar spine by CCD system is correlated significantly to the same data checked later on the same subjects in every direction of the movements. The differences between two checks are usually less than 1 degree. Conclusion： Specially designed CCD based system for 3-dimensional real-time positioning could objectively reflect the segmental ROM of lumbar spine. The system would be of great clinical significance in the assessment of the biomechanical dysfunction of lumbar spine and the effect of the treatment applied.展开更多
BACKGROUND The majority of published data report the results of biomechanical tests of various design pedicle screw performance.The clinical relevance and relative contribution of screw design to instrumentation stabi...BACKGROUND The majority of published data report the results of biomechanical tests of various design pedicle screw performance.The clinical relevance and relative contribution of screw design to instrumentation stability have been insufficiently studied.AIM To estimate the contribution of screw design to rate of pedicle screw loosening in patients with degenerative diseases of the lumbar spine.METHODS This study is a prospective evaluation of 175 patients with degenerative diseases and instability of the lumbar spine segments.Participants underwent spinal instrumentation employing pedicle screws with posterior only or transforaminal interbody fusion.Follow-up was for 18 mo.Patients with signs of pedicle screw loosening on computed tomography were registered;logistic regression analysis was used to identify the factors that influenced the rate of loosening.RESULTS Parameters included in the analysis were screw geometry,type of thread,external and internal screw diameter and helical pitch,bone density in Hounsfield units,number of levels fused,instrumentation without anterior support,laminectomy,and unilateral and bilateral total facet joint resection.The rate of screw loosening decreased with the increment in outer diameter,decrease in core diameter and helical pitch.The rate of screw loosening correlated positively with the number of fused levels and decreasing bone density.Bilateral facet joint removal significantly favored pedicle screw loosening.The influence of other factors was insignificant.CONCLUSION Screw parameters had a significant impact on the loosening rate along with bone quality characteristics,the number of levels fused and the extensiveness of decompression.The significance of the influence of screw parameters was comparable to those of patient-and surgery-related factors.Pedicle screw loosening was influenced by helical pitch,inner and outer diameter,but screw geometry and thread type were insignificant factors.展开更多
Spine biomechanical testing methods in the past few decades have not evolved beyond employing either cadaveric studies or finite element modeling techniques.However,both these approaches may have inherent cost and tim...Spine biomechanical testing methods in the past few decades have not evolved beyond employing either cadaveric studies or finite element modeling techniques.However,both these approaches may have inherent cost and time limitations.Cadaveric studies are the present gold standard for spinal implant design and regulatory approval,but they introduce significant variability in measurements across patients,often requiring large sample sizes.Finite element modeling demands considerable expertise and can be computationally expensive when complex geometry and material nonlinearity are introduced.Validated analogue spine models could complement these traditional methods as a low-cost and high-fidelity alternative.A fully 3D printable L-S1 analogue spine model with ligaments is developed and validated in this research.Rotational stiffness of the model under pure bending loading in flexion-extension,Lateral Bending(LB)and Axial Rotation(AR)is evaluated and compared against historical ex vivo and in silico models.Additionally,the effect of interspinous,intertransverse ligaments and the Thoracolumbar Fascia(TLF)on spinal stiffness is evaluated by systematic construction of the model.In flexion,model Range of Motion(ROM)was 12.92±0.11°(ex vivo:16.58°,in silico:12.96°)at 7.5Nm.In LB,average ROM was 13.67±0.12°at 7.5 Nm(ex vivo:15.21±1.89°,in silico:15.49±0.23°).Similarly,in AR,average ROM was 17.69±2.12°at 7.5Nm(ex vivo:14.12±0.31°,in silico:15.91±0.28°).The addition of interspinous and intertransverse ligaments increased both flexion and LB stiffnesses by approximately 5%.Addition of TLF showed increase in flexion and AR stiffnesses by 29%and 24%,respectively.This novel model can reproduce physiological ROMs with high repeatability and could be a useful open-source tool in spine biomechanics.展开更多
BACKGROUND The bone is the second most common site of thyroid cancer metastasis,after the lung.Treatment options for bone metastasis of thyroid cancer include surgery,radioiodine therapy(RAIT),external radiation thera...BACKGROUND The bone is the second most common site of thyroid cancer metastasis,after the lung.Treatment options for bone metastasis of thyroid cancer include surgery,radioiodine therapy(RAIT),external radiation therapy,thyroid-stimulating hormone(TSH)inhibition,bisphosphonates,and small-molecule targeted therapies.In most cases,thyroid carcinoma is found in the thyroid tissue;reports of follicular thyroid carcinoma with a single metastasis to the lumbar spine are rare.CASE SUMMARY We report a case of bone metastasis as the only clinical manifestation of thyroid cancer.The patient was a 67-year-old woman with lumbar pain for 7 years and aggravation with intermittent claudication who had previously undergone partial thyroidectomy of a benign thyroid lesion.No abnormal nodules were found in the bilateral thyroid glands.However,imaging studies were consistent with a spinal tumor,and the lesion was diagnosed as a metastatic follicular carcinoma of thyroid origin.We adopted a multidisciplinary collaboration and comprehensive treatment approach.The patient underwent lumbar spine surgery,total resection of the thyroid,postoperative TSH suppression therapy,and RAIT.There were no complications associated with the operation,and the patient had good postoperative recovery.She has experienced no recurrence.CONCLUSION Follicular thyroid carcinoma is associated with early hematogenous metastasis,and the bone is a typical site of metastasis.Single bone metastasis is not a contraindication to medical procedures,and providing the appropriate therapy can result in better outcomes and quality of life for these patients.展开更多
Objective:To investigate the short-term and medium-term efficacy of one-stage posterior debridement,intertransverse process bone grafting and screw-rod system fixation in the treatment of Brucella spondylitis of the l...Objective:To investigate the short-term and medium-term efficacy of one-stage posterior debridement,intertransverse process bone grafting and screw-rod system fixation in the treatment of Brucella spondylitis of the lumbar spine.Method:156 cases of Brucella spondylitis of lumbar spine were selected and divided into experimental group(n=80)and combined group(n=76)according to different surgical methods.The experimental group was treated with one-stage posterior debridement,intertransverse process bone grafting and screw-rod system fixation.The combined group was treated with one-stage anterior debridement and intertransverse process bone grafting combined with posterior internal fixation.The operative indexes and clinical effects were compared between the two groups.Result:The operation time,intraoperative bleeding volume and time of landing after operation in the experimental group were less than those in the combined group,with statistical significance(P<0.05).VAS score,ODI index,Cobb angle and Frankel grade of nervous function in the two groups were significantly improved after 3 months and 36 months of treatment(P<0.05),but there was no significant difference between the two groups at the same time(P>0.05).There was no significant difference in the excellent and good rate between the two groups after 3 and 36 months of treatment(P>0.05).There was no recurrence of the lesion in both groups.The intertransverse process bone graft healed and the screw-rod system was well fixed.Conclusion:One-stage posterior debridement,intertransverse process bone grafting and screw-rod system fixation for treatment of Brucella spondylitis of lumbar spine are effective,with short operation time and less trauma,which are worthy of clinical promotion.展开更多
<strong>Background:</strong> The lumbar spine is the portion most frequently involved in degenerative pathologies. Everyone will suffer one day from “low back pain”. These pathologies are very frequent: ...<strong>Background:</strong> The lumbar spine is the portion most frequently involved in degenerative pathologies. Everyone will suffer one day from “low back pain”. These pathologies are very frequent: epidemiological studies have shown that 65% to 90% of the general population could be affected by low back pain (lumbago) which could become chronic at acertain stage or could be complicated (2% to 4%) of cases could end up affecting nerve roots. Chronic low back pain causes a major public health problem in terms of morbidity and socioeconomic repercussions. <strong>Purpose:</strong> The overall purpose of this study is to evaluate the professional habits of exam applicants in case of degenerative pathologies of the lumbar spine, to Appreciate the knowledge of clinicians on the usefulness of medical imaging techniques in the event of suspicion of a degenerative pathology of the lumbar spine and finally to evaluate if the professional habits of requesting examinations in Cameroon comply with the Recommendations for Clinical Practice. <strong>Methods:</strong> A cross-sectional and descriptive study was used and was based on questionnaires distributed to those practitioners who requested for these diagnostic medical imaging studies and procedures at Yaoundé General Hospital (HGY), Yaoundé Central Hospital, La Cathédrale Medical Center, Yaoundé University Teaching Hospital, the Douala General Hospital, the Laquintinie Hospital of Douala, the Military Hospital of Douala, the Daniel Muna Memorial Clinic of Douala, the International Center for Clinical and Medicine Imaging, the Ngaoundere Regional Hospital and the Protestant Hospital of Ngaoundere (HPN), from April 2020 to March 2021. Data collected was processed and analyzed via Epi Info version 12.0 and the statistical test used for correlation was Chi2. <strong>Results:</strong> 137 practitioners were retained among whom, 90 were male and 47 females, their average age being 46 years with working experience less than 5 years (35.8%). The results obtained show that parameters such as availability and accessibility of the required diagnostic medical imaging modalities could greatly influence the examination prescription. On the contrary, few prescribers were less interested in the costs and secondary effects due to irradiation and the invasiveness of these examinations. Professional habits of those who requested these examinations were in majority closer in line with the recommended clinical practices. However, an average of 43.78% of prescribers never followed recommendations nor applied them. On the other hand, knowledge and the application of these recommendations increased as the prescriber’s working experience too increased. Up to 54.47% of prescribers were not aware of those recommendations about requesting these examinations. Conclusion: Our results indicate that Medical Diagnostic Imaging techniques are not judiciously and optimally exploited in the diagnosis of degenerative pathologies of the lumbar spine and it would be necessary to establish recommendations for clinical practice adapted to Cameroonian realities.展开更多
As the elderly population continues to grow, the number of patients with low back pain is gradually increasing. Among them, Lumbar Degenerative Diseases (LDD) is one of the major contributors to low back pain. Biomech...As the elderly population continues to grow, the number of patients with low back pain is gradually increasing. Among them, Lumbar Degenerative Diseases (LDD) is one of the major contributors to low back pain. Biomechanical in vivo studies of the lumbar spine are mainly performed by implants or imaging data to record the real-time changes of form and stress on the intervertebral disc during motion. However, the current developments are slow due to the technological and ethical limitations. In vitro experiments include animal experiments and cadaver experiments, which are difficult to operate or differ greatly from normal human structures, and the results still need to be verified repeatedly to test their accuracy. As for finite element method, it is relatively low cost and can repeat the experimental results. Therefore, we believe that finite element analysis plays an extremely important role in biomechanical research, especially in analyzing the relationship between different surgical models and the degeneration caused by different mechanics.展开更多
Pedicle fractures are among the least common;those involving bilateral pedicle fractures are rare. To our knowledge, there are no previous reports of bilateral multi-level pedicle fractures in the lumbar spine seconda...Pedicle fractures are among the least common;those involving bilateral pedicle fractures are rare. To our knowledge, there are no previous reports of bilateral multi-level pedicle fractures in the lumbar spine secondary to trauma concerning adolescents. We report a 14-year-old male with bilateral multi-level traumatic pedicle fractures (BMTPF) of lumbar spine (LS) three and five (L3, L5) and spondylolisthesis of L3 on L4 (classified Meyerding grade II). Posterior lumbar instrumentation from L1 to S1 was performed. Postoperative recovery was uneventful. The aims of the study were to provide the first documentation of this pattern of injury in adolescents LS secondary to trauma and to review literature. The patient’s parents were informed that non-identifying information from the case would be submitted for publication, and they provided consent.展开更多
Objective: To assess the importance of incidental extraspinal findings on Magnetic Resonance Imaging of the lumbar spine in two hospital facilities. Materials and Methods: It was a descriptive and retrospective study ...Objective: To assess the importance of incidental extraspinal findings on Magnetic Resonance Imaging of the lumbar spine in two hospital facilities. Materials and Methods: It was a descriptive and retrospective study from November 2015 to March 2016. The records of patients who had done a Magnetic Resonance Imaging (MRI) scan of the lumbar spine were re-read in search of incidental findings. The incidental findings found were classified using Colonography Reporting and Data System(C-RADS) classification of extracolonic lesions to assess clinical significance. The prevalence of incidental findings was calculated for each facility, as well as the distribution according to age, the organs involved and the clinical importance. A non-detection rate was calculated by confronting the findings of the study with the original reports. Results: The prevalence of incidental findings was respectively 33% (19 out of 36) in Jordan Medical Center (JMC) in Yaounde and 27.74% (106 out of 292) in Jacques Monod Hospital. The extraspinal incidental findings were classified mainly as extracolonic 2 (E2): 58% in each facility. The percentage detection of incidental findings was 5% at JMS and 1.7% at Jacques Monod Hospital. Conclusion: Extraspinal incidental findings are frequent in both hospitals. However, the rate of detection remains very low.展开更多
Back pain is a common chronic disorder that represents a large burden for the health care system. There is a broad spectrum of available treatment options for patients suffering from chronic lower back pain in the set...Back pain is a common chronic disorder that represents a large burden for the health care system. There is a broad spectrum of available treatment options for patients suffering from chronic lower back pain in the setting of degenerative disorders of the lumbar spine, including both conservative and operative approaches. Lumbar arthrodesis techniques can be divided into subcategories based on the part of the vertebral column that is addressed(anterior vs posterior). Furthermore, one has to differentiate between approaches aiming at a solid fusion in contrast to motion-sparing techniques with the proposed advantage of a reduced risk of developing adjacent disc disease. However, the field of application and long-term outcomes of these novel motion-preserving surgical techniques, including facet arthroplasty, nucleus replacement, and lumbar disc arthroplasty, need to be more precisely evaluated in long-term prospective studies. Innovative surgical treatment strategies involving minimally invasive techniques, such as lateral lumbar interbody fusion or transforaminal lumbar interbody fusion, as well as percutaneous implantation of transpedicular or trans-facet screws, have been established with the reported advantages of reduced tissue invasiveness, decreased collateral damage, reduced blood loss, and decreased risk of infection. The aim of this study was to review well-established procedures for lumbar spinal fusion with the main focus on current concepts on spinal arthrodesis and motion-sparing techniques in degenerative disorders of the lumbar spine.展开更多
Degenerative disease of the lumbar spine is a common and increasingly prevalent condition that is often implicated as the primary reason for chronic low back pain and the leading cause of disability in the western wor...Degenerative disease of the lumbar spine is a common and increasingly prevalent condition that is often implicated as the primary reason for chronic low back pain and the leading cause of disability in the western world. Surgical management of lumbar degenerative disease has historically been approached by way of open surgical procedures aimed at decompressing and/or stabilizing the lumbar spine. Advances in technology andsurgical instrumentation have led to minimally invasive surgical techniques being developed and increasingly used in the treatment of lumbar degenerative disease. Compared to the traditional open spine surgery, minimally invasive techniques require smaller incisions and decrease approach-related morbidity by avoiding muscle crush injury by self-retaining retractors, preventing the disruption of tendon attachment sites of important muscles at the spinous processes, using known anatomic neurovascular and muscle planes, and minimizing collateral soft-tissue injury by limiting the width of the surgical corridor. The theoretical benefits of minimally invasive surgery over traditional open surgery include reduced blood loss, decreased postoperative pain and narcotics use, shorter hospital length of stay, faster recover and quicker return to work and normal activity. This paper describes the different minimally invasive techniques that are currently available for the treatment of degenerative disease of the lumbar spine.展开更多
文摘BACKGROUND Cauda equina syndrome(CES)is characterized by a group of symptoms that may be caused by inflammation,spinal cord compression,venous congestion,or ischemia.This syndrome is commonly an indication for surgical intervention but has not been determined as a postoperative complication following surgery for lumbar spine disease.CASE SUMMARY To report the case of a 54-year-old male patient who had CES following spinal surgery,with no obvious compression lesions found during re-exploration,suggesting that vascular insufficiency may have contributed to the condition.Furthermore,a series of urodynamic studies on bladder recovery patterns in such complications have also been investigated.CONCLUSION Postoperative CES requires urgent imaging and exploration to rule out compression;noncompressive cases,including vascular insufficiency may performed conservative management.
基金Key Laboratory of Spinal Degenerative Diseases,Xianyang City(Project No.:L2023-CXNL-CXPT-ZDSYS-010)Key Technology Innovation Team Project for Minimally Invasive Spinal Surgery,Xianyang City(Grant No.:L2022CXNLTD002)University-level Scientific Research Project,Shaanxi University of Traditional Chinese Medicine(Project No.:2020FS06).
文摘Objective:To investigate the diagnostic value of magnetic resonance imaging(MRI)in patients with Modic changes and endplate sclerosis of the lumbar spine.Methods:A total of 66 patients with lumbar spine diseases who underwent MRI and CT diagnostic examinations at the hospital from May 2024 to April 2025 were included in this study.The MRI findings of Modic changes were compared between Type I and Type II patients,and the presence or absence of endplate sclerosis signals and the HU value ratio on CT were analyzed.The pathological characteristics of Modic changes in Type I and Type II patients were observed.The imaging features of Modic changes in patients with lumbar spine diseases were analyzed.Results:Modic changes were present in 34 patients,with a total of 204 endplates evaluated,of which 74 were affected.MRI classification showed:Type I in 8 cases(10.81%),Type I/II mixed in 10 cases(13.51%),Type II in 51 cases(68.92%),and Type II/III mixed in 5 cases(6.76%).In CT reconstruction images,26 endplates with Modic changes on MRI showed sclerosis in the vertebral body,presenting high-density sclerotic features.These sclerotic areas did not exhibit distinct signal characteristics on MRI but pathologically demonstrated Type II Modic changes concurrently with fatty degeneration and sclerosis;In patients with Modic changes of Type I and Type II,regardless of the presence or absence of endplate sclerosis,the sagittal T1/T2 signal intensity ratio showed no statistically significant difference(P>0.05).However,the HU value ratio in Type II changes with sclerotic regions(2.74±0.61)was significantly higher than that in regions without sclerosis(1.16±0.23),with a statistically significant difference(P<0.05).Conclusion:CT reconstruction images of patients with lumbar Modic changes clearly demonstrate endplate sclerosis,a phenomenon closely associated with the bone marrow repair process.MRI has limited sensitivity for detecting sclerosis,potentially due to the following factors:first,differences in the radiographic characterization of endplate mineral content;second,the specific influence of different Modic types on signal intensity.This suggests that MRI classification should be combined with CT features for comprehensive interpretation.
基金National Natural Science Foundation of China,No.81970698 and No.81900805Peking University People's Hospital Research and Development Funds,No.Project RS2022-03。
文摘BACKGROUND The association between body mass index(BMI)and bone mineral density(BMD)has shown inconsistent results,varying by sex and skeletal site.Despite normal or elevated bone mass,individuals with type 2 diabetes have an increased risk of hip and vertebral fractures.AIM To assess lumbar spine trabecular volumetric BMD(vBMD)across different BMI categories in individuals with and without diabetes.METHODS This cross-sectional study included 966 men over 50 years old and 1001 postmenopausal women from the Pinggu Metabolic Disease Study.The vBMD of lumbar vertebrae 2 through 4 was measured using quantitative computed tomography.Total adipose tissue,subcutaneous adipose tissue(SAT),visceral adipose tissue(VAT),and lumbar skeletal muscle area were also quantified.RESULTS In men with obesity(P=0.038)and overweight(P=0.032),vBMD was significantly higher in the diabetes group compared to non-diabetic men.After adjusting for age and sex,no significant saturation effect between BMI and BMD was found in participants with diabetes or in women without diabetes.However,a BMI threshold of 22.33 kg/m²indicated a saturation point for vBMD in nondiabetic men.Independent predictors of vBMD in men included age(r=-0.387,P<0.001),BMI(r=0.130,P=0.004),and VAT(r=-0.145,P=0.001).For women,significant predictors were age(r=-0.594,P<0.001),BMI(r=0.157,P=0.004),VAT(r=-0.112,P=0.001),and SAT(r=-0.068,P=0.035).CONCLUSION The relationship between BMI and trabecular vBMD differs in individuals with and without diabetes.Overweight and obese men with diabetes exhibit higher vBMD.
文摘AIM: To evaluate two simple angle measurements for predicting lumbosacral transitional vertebra (LSTV) in magnetic resonance imaging (MRI) studies of the spine. METHODS: The lumbar spine MRI studies of 50 subjects with LSTV and 50 subjects with normal lumbosacral anatomy were retrospectively evaluated. In each study, the mid-sagittal T2-weighted image was used to measure the angle formed by a line parallel to the superior surface of the sacrum and a line perpendicular to the axis of the scan table (A-angle), as well as the angle formed by a line parallel to the superior endplate of the L3 vertebra and a line parallel to the superior surface of the sacrum (B-angle). RESULTS: The total study population consisted of 100 subjects (46 males, 54 females, 51 ± 16 years old). There were no differences in age and sex between the two groups. Both A-angle and B-angle were significantly increased in subjects with LSTV compared to controls (P < 0.05). The optimal cut-off values of A-angle and B-angle for the prediction of LSTV were 39.8° (sensitivity = 80%, specificity = 80%, accuracy = 83%; 95% confidence interval = 74%-89%, P = 0.0001) and 35.9° (sensitivity = 80%, specificity = 54%, accuracy = 69%; 95% confidence interval = 59%-78%, P = 0.0005), respectively. CONCLUSION: On sagittal MR images of the lumbar spine, an increased A-angle and/or B-angle should alert the radiologist to the presence of LSTV.
文摘BACKGROUND The response to axial physiological pressure due to load transfer to the lumbar spine structures is among the various back pain mechanisms.Understanding the spine adaptation to cumulative compressive forces can influence the choice of personalized treatment strategies.AIM To analyze the impact of axial load on the spinal canal’s size,intervertebral foramina,ligamenta flava and lumbosacral alignment.METHODS We assessed 90 patients using three-dimensional isotropic magnetic resonance imaging acquisition in a supine position with or without applying an axial compression load.Anatomical structures were measured in the lumbosacral region from L1 to S1 in lying and axially-loaded magnetic resonance images.A paired t test atα=0.05 was used to calculate the observed differences.RESULTS After axial loading,the dural sac area decreased significantly,by 5.2%on average(4.1%,6.2%,P<0.001).The intervertebral foramina decreased by 3.4%(2.7%,4.1%,P<0.001),except for L5-S1.Ligamenta flava increased by 3.8%(2.5%,5.2%,P<0.001),and the lumbosacral angle increased.CONCLUSION Axial load exacerbates the narrowing of the spinal canal and intervertebral foramina from L1-L2 to L4-L5.Cumulative compressive forces thicken ligamenta flava and exaggerate lumbar lordosis.
文摘AIM: To compare minimally invasive(MIS) and open techniques for MIS lumbar laminectomy, direct lateral and transforaminal lumbar interbody fusion(TLIF) surgeries with respect to length of surgery, estimated blood loss(EBL), neurologic complications, perioperative transfusion, postoperative pain, postoperative narcotic use, and length of stay(LOS).METHODS: A systematic review of previously published studies accessible through Pub Med was performed. Only articles in English journals or published with English language translations were included. Level of evidence of the selected articles was assessed. Statistical data was calculated with analysis of variance with P < 0.05 considered statistically significant.RESULTS: A total of 11 pertinent laminectomy studies, 20 direct lateral studies, and 27 TLIF studies were found. For laminectomy, MIS techniques resulted in a significantly longer length of surgery(177.5 min vs 129.0 min, P = 0.04), shorter LOS(4.3 d vs 5.3 d, P = 0.01) and less perioperative pain(visual analog scale: 16 ± 17 vs 34 ± 31, P = 0.04). There is evidence of decreased narcotic use for MIS patients(postoperative intravenous morphine use: 9.3 mg vs 42.8 mg), however this difference is of unknown significance. Direct lateral approaches have insufficient comparative data to establish relative perioperative outcomes. MIS TLIF had superior EBL(352 mL vs 580 mL, P < 0.0001) and LOS(7.7 d vs 10.4 d, P < 0.0001) and limited data to suggest lower perioperative pain.CONCLUSION: Based on perioperative outcomes data, MIS approach is superior to open approach for TLIF. For laminectomy, MIS and open approaches can be chosen based on surgeon preference. For lateral approaches, there is insufficient evidence to find noninferior perioperative outcomes at this time.
文摘BACKGROUND Patients undergoing lumbar spine surgery usually suffer severe pain in the postoperative period.The erector spinae plane block(ESPB),first published in 2016,can anesthetize the ventral and dorsal rami of thoracic nerves and produce an extensive multi-dermatomal sensory block.AIM To assess whether bilateral ultrasound-guided ESPB at a lower thoracic level could improve pain control and quality of recovery in patients undergoing lumbar spine surgery.METHODS A total of 60 patients aged 18-80 years scheduled to undergo lumbar spine surgery with general anesthesia were randomly assigned to two groups:ESPB group(preoperative bilateral ultrasound-guided ESPB at T10 vertebral level)and control group(no preoperative ESPB).Both groups received standard general anesthesia.The main indicator was the duration to the first patient controlled intravenous analgesia(PCIA)bolus.RESULTS In the ESPB group,the duration to the first PCIA bolus was significantly longer than that in the control group(h)[8.0(4.5,17.0)vs 1.0(0.5,6),P<0.01],and resting and coughing numerical rating scale(NRS)scores at 48 h post operation were significantly lower than those in the control group(P<0.05).There was no significant difference between the two groups regarding resting and coughing NRS scores at 24 h post operation.Sufentanil consumption during the operation was significantly lower in the ESPB group than in the control group(P<0.01),while there was no significant difference between the two groups regarding morphine consumption at 24 or 48 h post operation.In the ESPB group,Modified Observer’s Assessment of Alertness/Sedation score within 20 min after extubation was higher and duration in the post-anesthesia care unit was shorter than those in the control group(P<0.01).CONCLUSION In patients undergoing lumbar spine surgery,ultrasound-guided ESPB at a lower thoracic level improves the analgesic effect,reduces opioid consumption,and improves postoperative recovery.
基金supported in part by the Technology Innovation 2030 under Grant 2022ZD0211700.
文摘For the analysis of spinal and disc diseases,automated tissue segmentation of the lumbar spine is vital.Due to the continuous and concentrated location of the target,the abundance of edge features,and individual differences,conventional automatic segmentation methods perform poorly.Since the success of deep learning in the segmentation of medical images has been shown in the past few years,it has been applied to this task in a number of ways.The multi-scale and multi-modal features of lumbar tissues,however,are rarely explored by methodologies of deep learning.Because of the inadequacies in medical images availability,it is crucial to effectively fuse various modes of data collection for model training to alleviate the problem of insufficient samples.In this paper,we propose a novel multi-modality hierarchical fusion network(MHFN)for improving lumbar spine segmentation by learning robust feature representations from multi-modality magnetic resonance images.An adaptive group fusion module(AGFM)is introduced in this paper to fuse features from various modes to extract cross-modality features that could be valuable.Furthermore,to combine features from low to high levels of cross-modality,we design a hierarchical fusion structure based on AGFM.Compared to the other feature fusion methods,AGFM is more effective based on experimental results on multi-modality MR images of the lumbar spine.To further enhance segmentation accuracy,we compare our network with baseline fusion structures.Compared to the baseline fusion structures(input-level:76.27%,layer-level:78.10%,decision-level:79.14%),our network was able to segment fractured vertebrae more accurately(85.05%).
文摘Objective： To observe the tested results of the segmental range of motion （ROM） of lumbar spine by charge couple device （CCD）-based system for 3-dimensional real-time positioning （CCD system）, and to analyze its clinical significance. Methods： Seven patients with lumbar joint dysfunction and 8 healthy subjects were tested twice by the CCD-based system with an interval of 10 min. Results： The ROM of the patients was obviously lesser than that of the healthy subjects. The measuring data of segmental ROM of lumbar spine by CCD system is correlated significantly to the same data checked later on the same subjects in every direction of the movements. The differences between two checks are usually less than 1 degree. Conclusion： Specially designed CCD based system for 3-dimensional real-time positioning could objectively reflect the segmental ROM of lumbar spine. The system would be of great clinical significance in the assessment of the biomechanical dysfunction of lumbar spine and the effect of the treatment applied.
文摘BACKGROUND The majority of published data report the results of biomechanical tests of various design pedicle screw performance.The clinical relevance and relative contribution of screw design to instrumentation stability have been insufficiently studied.AIM To estimate the contribution of screw design to rate of pedicle screw loosening in patients with degenerative diseases of the lumbar spine.METHODS This study is a prospective evaluation of 175 patients with degenerative diseases and instability of the lumbar spine segments.Participants underwent spinal instrumentation employing pedicle screws with posterior only or transforaminal interbody fusion.Follow-up was for 18 mo.Patients with signs of pedicle screw loosening on computed tomography were registered;logistic regression analysis was used to identify the factors that influenced the rate of loosening.RESULTS Parameters included in the analysis were screw geometry,type of thread,external and internal screw diameter and helical pitch,bone density in Hounsfield units,number of levels fused,instrumentation without anterior support,laminectomy,and unilateral and bilateral total facet joint resection.The rate of screw loosening decreased with the increment in outer diameter,decrease in core diameter and helical pitch.The rate of screw loosening correlated positively with the number of fused levels and decreasing bone density.Bilateral facet joint removal significantly favored pedicle screw loosening.The influence of other factors was insignificant.CONCLUSION Screw parameters had a significant impact on the loosening rate along with bone quality characteristics,the number of levels fused and the extensiveness of decompression.The significance of the influence of screw parameters was comparable to those of patient-and surgery-related factors.Pedicle screw loosening was influenced by helical pitch,inner and outer diameter,but screw geometry and thread type were insignificant factors.
基金the Natural Science and Engineering Research Council of Canada(NSERC,grant no.NSERC 250992 and 245375)Fonds de recherche du Québec(FRQNT,grant no.315108 and 332139)。
文摘Spine biomechanical testing methods in the past few decades have not evolved beyond employing either cadaveric studies or finite element modeling techniques.However,both these approaches may have inherent cost and time limitations.Cadaveric studies are the present gold standard for spinal implant design and regulatory approval,but they introduce significant variability in measurements across patients,often requiring large sample sizes.Finite element modeling demands considerable expertise and can be computationally expensive when complex geometry and material nonlinearity are introduced.Validated analogue spine models could complement these traditional methods as a low-cost and high-fidelity alternative.A fully 3D printable L-S1 analogue spine model with ligaments is developed and validated in this research.Rotational stiffness of the model under pure bending loading in flexion-extension,Lateral Bending(LB)and Axial Rotation(AR)is evaluated and compared against historical ex vivo and in silico models.Additionally,the effect of interspinous,intertransverse ligaments and the Thoracolumbar Fascia(TLF)on spinal stiffness is evaluated by systematic construction of the model.In flexion,model Range of Motion(ROM)was 12.92±0.11°(ex vivo:16.58°,in silico:12.96°)at 7.5Nm.In LB,average ROM was 13.67±0.12°at 7.5 Nm(ex vivo:15.21±1.89°,in silico:15.49±0.23°).Similarly,in AR,average ROM was 17.69±2.12°at 7.5Nm(ex vivo:14.12±0.31°,in silico:15.91±0.28°).The addition of interspinous and intertransverse ligaments increased both flexion and LB stiffnesses by approximately 5%.Addition of TLF showed increase in flexion and AR stiffnesses by 29%and 24%,respectively.This novel model can reproduce physiological ROMs with high repeatability and could be a useful open-source tool in spine biomechanics.
基金Supported by the Medical Scientific Research Foundation of Guangdong Province,China,No.A2021432 and B2021448the Shantou Medical Science and Technology Planning Project,No.210521236491457 and 210625106490696the Undergraduate Innovation Training Project of Shantou University,No.31/38/47/54。
文摘BACKGROUND The bone is the second most common site of thyroid cancer metastasis,after the lung.Treatment options for bone metastasis of thyroid cancer include surgery,radioiodine therapy(RAIT),external radiation therapy,thyroid-stimulating hormone(TSH)inhibition,bisphosphonates,and small-molecule targeted therapies.In most cases,thyroid carcinoma is found in the thyroid tissue;reports of follicular thyroid carcinoma with a single metastasis to the lumbar spine are rare.CASE SUMMARY We report a case of bone metastasis as the only clinical manifestation of thyroid cancer.The patient was a 67-year-old woman with lumbar pain for 7 years and aggravation with intermittent claudication who had previously undergone partial thyroidectomy of a benign thyroid lesion.No abnormal nodules were found in the bilateral thyroid glands.However,imaging studies were consistent with a spinal tumor,and the lesion was diagnosed as a metastatic follicular carcinoma of thyroid origin.We adopted a multidisciplinary collaboration and comprehensive treatment approach.The patient underwent lumbar spine surgery,total resection of the thyroid,postoperative TSH suppression therapy,and RAIT.There were no complications associated with the operation,and the patient had good postoperative recovery.She has experienced no recurrence.CONCLUSION Follicular thyroid carcinoma is associated with early hematogenous metastasis,and the bone is a typical site of metastasis.Single bone metastasis is not a contraindication to medical procedures,and providing the appropriate therapy can result in better outcomes and quality of life for these patients.
基金2018 Hebei health technology research and achievement transformation key project(No.zh2018014)2018 Hebei Medical applicable technology tracking project(No.gl2018074)+1 种基金2017 Zhangjiakou city level plan(No.17120010d)2018 Hebei North University School level scientific research project(No.yb2018010)
文摘Objective:To investigate the short-term and medium-term efficacy of one-stage posterior debridement,intertransverse process bone grafting and screw-rod system fixation in the treatment of Brucella spondylitis of the lumbar spine.Method:156 cases of Brucella spondylitis of lumbar spine were selected and divided into experimental group(n=80)and combined group(n=76)according to different surgical methods.The experimental group was treated with one-stage posterior debridement,intertransverse process bone grafting and screw-rod system fixation.The combined group was treated with one-stage anterior debridement and intertransverse process bone grafting combined with posterior internal fixation.The operative indexes and clinical effects were compared between the two groups.Result:The operation time,intraoperative bleeding volume and time of landing after operation in the experimental group were less than those in the combined group,with statistical significance(P<0.05).VAS score,ODI index,Cobb angle and Frankel grade of nervous function in the two groups were significantly improved after 3 months and 36 months of treatment(P<0.05),but there was no significant difference between the two groups at the same time(P>0.05).There was no significant difference in the excellent and good rate between the two groups after 3 and 36 months of treatment(P>0.05).There was no recurrence of the lesion in both groups.The intertransverse process bone graft healed and the screw-rod system was well fixed.Conclusion:One-stage posterior debridement,intertransverse process bone grafting and screw-rod system fixation for treatment of Brucella spondylitis of lumbar spine are effective,with short operation time and less trauma,which are worthy of clinical promotion.
文摘<strong>Background:</strong> The lumbar spine is the portion most frequently involved in degenerative pathologies. Everyone will suffer one day from “low back pain”. These pathologies are very frequent: epidemiological studies have shown that 65% to 90% of the general population could be affected by low back pain (lumbago) which could become chronic at acertain stage or could be complicated (2% to 4%) of cases could end up affecting nerve roots. Chronic low back pain causes a major public health problem in terms of morbidity and socioeconomic repercussions. <strong>Purpose:</strong> The overall purpose of this study is to evaluate the professional habits of exam applicants in case of degenerative pathologies of the lumbar spine, to Appreciate the knowledge of clinicians on the usefulness of medical imaging techniques in the event of suspicion of a degenerative pathology of the lumbar spine and finally to evaluate if the professional habits of requesting examinations in Cameroon comply with the Recommendations for Clinical Practice. <strong>Methods:</strong> A cross-sectional and descriptive study was used and was based on questionnaires distributed to those practitioners who requested for these diagnostic medical imaging studies and procedures at Yaoundé General Hospital (HGY), Yaoundé Central Hospital, La Cathédrale Medical Center, Yaoundé University Teaching Hospital, the Douala General Hospital, the Laquintinie Hospital of Douala, the Military Hospital of Douala, the Daniel Muna Memorial Clinic of Douala, the International Center for Clinical and Medicine Imaging, the Ngaoundere Regional Hospital and the Protestant Hospital of Ngaoundere (HPN), from April 2020 to March 2021. Data collected was processed and analyzed via Epi Info version 12.0 and the statistical test used for correlation was Chi2. <strong>Results:</strong> 137 practitioners were retained among whom, 90 were male and 47 females, their average age being 46 years with working experience less than 5 years (35.8%). The results obtained show that parameters such as availability and accessibility of the required diagnostic medical imaging modalities could greatly influence the examination prescription. On the contrary, few prescribers were less interested in the costs and secondary effects due to irradiation and the invasiveness of these examinations. Professional habits of those who requested these examinations were in majority closer in line with the recommended clinical practices. However, an average of 43.78% of prescribers never followed recommendations nor applied them. On the other hand, knowledge and the application of these recommendations increased as the prescriber’s working experience too increased. Up to 54.47% of prescribers were not aware of those recommendations about requesting these examinations. Conclusion: Our results indicate that Medical Diagnostic Imaging techniques are not judiciously and optimally exploited in the diagnosis of degenerative pathologies of the lumbar spine and it would be necessary to establish recommendations for clinical practice adapted to Cameroonian realities.
文摘As the elderly population continues to grow, the number of patients with low back pain is gradually increasing. Among them, Lumbar Degenerative Diseases (LDD) is one of the major contributors to low back pain. Biomechanical in vivo studies of the lumbar spine are mainly performed by implants or imaging data to record the real-time changes of form and stress on the intervertebral disc during motion. However, the current developments are slow due to the technological and ethical limitations. In vitro experiments include animal experiments and cadaver experiments, which are difficult to operate or differ greatly from normal human structures, and the results still need to be verified repeatedly to test their accuracy. As for finite element method, it is relatively low cost and can repeat the experimental results. Therefore, we believe that finite element analysis plays an extremely important role in biomechanical research, especially in analyzing the relationship between different surgical models and the degeneration caused by different mechanics.
文摘Pedicle fractures are among the least common;those involving bilateral pedicle fractures are rare. To our knowledge, there are no previous reports of bilateral multi-level pedicle fractures in the lumbar spine secondary to trauma concerning adolescents. We report a 14-year-old male with bilateral multi-level traumatic pedicle fractures (BMTPF) of lumbar spine (LS) three and five (L3, L5) and spondylolisthesis of L3 on L4 (classified Meyerding grade II). Posterior lumbar instrumentation from L1 to S1 was performed. Postoperative recovery was uneventful. The aims of the study were to provide the first documentation of this pattern of injury in adolescents LS secondary to trauma and to review literature. The patient’s parents were informed that non-identifying information from the case would be submitted for publication, and they provided consent.
文摘Objective: To assess the importance of incidental extraspinal findings on Magnetic Resonance Imaging of the lumbar spine in two hospital facilities. Materials and Methods: It was a descriptive and retrospective study from November 2015 to March 2016. The records of patients who had done a Magnetic Resonance Imaging (MRI) scan of the lumbar spine were re-read in search of incidental findings. The incidental findings found were classified using Colonography Reporting and Data System(C-RADS) classification of extracolonic lesions to assess clinical significance. The prevalence of incidental findings was calculated for each facility, as well as the distribution according to age, the organs involved and the clinical importance. A non-detection rate was calculated by confronting the findings of the study with the original reports. Results: The prevalence of incidental findings was respectively 33% (19 out of 36) in Jordan Medical Center (JMC) in Yaounde and 27.74% (106 out of 292) in Jacques Monod Hospital. The extraspinal incidental findings were classified mainly as extracolonic 2 (E2): 58% in each facility. The percentage detection of incidental findings was 5% at JMS and 1.7% at Jacques Monod Hospital. Conclusion: Extraspinal incidental findings are frequent in both hospitals. However, the rate of detection remains very low.
文摘Back pain is a common chronic disorder that represents a large burden for the health care system. There is a broad spectrum of available treatment options for patients suffering from chronic lower back pain in the setting of degenerative disorders of the lumbar spine, including both conservative and operative approaches. Lumbar arthrodesis techniques can be divided into subcategories based on the part of the vertebral column that is addressed(anterior vs posterior). Furthermore, one has to differentiate between approaches aiming at a solid fusion in contrast to motion-sparing techniques with the proposed advantage of a reduced risk of developing adjacent disc disease. However, the field of application and long-term outcomes of these novel motion-preserving surgical techniques, including facet arthroplasty, nucleus replacement, and lumbar disc arthroplasty, need to be more precisely evaluated in long-term prospective studies. Innovative surgical treatment strategies involving minimally invasive techniques, such as lateral lumbar interbody fusion or transforaminal lumbar interbody fusion, as well as percutaneous implantation of transpedicular or trans-facet screws, have been established with the reported advantages of reduced tissue invasiveness, decreased collateral damage, reduced blood loss, and decreased risk of infection. The aim of this study was to review well-established procedures for lumbar spinal fusion with the main focus on current concepts on spinal arthrodesis and motion-sparing techniques in degenerative disorders of the lumbar spine.
文摘Degenerative disease of the lumbar spine is a common and increasingly prevalent condition that is often implicated as the primary reason for chronic low back pain and the leading cause of disability in the western world. Surgical management of lumbar degenerative disease has historically been approached by way of open surgical procedures aimed at decompressing and/or stabilizing the lumbar spine. Advances in technology andsurgical instrumentation have led to minimally invasive surgical techniques being developed and increasingly used in the treatment of lumbar degenerative disease. Compared to the traditional open spine surgery, minimally invasive techniques require smaller incisions and decrease approach-related morbidity by avoiding muscle crush injury by self-retaining retractors, preventing the disruption of tendon attachment sites of important muscles at the spinous processes, using known anatomic neurovascular and muscle planes, and minimizing collateral soft-tissue injury by limiting the width of the surgical corridor. The theoretical benefits of minimally invasive surgery over traditional open surgery include reduced blood loss, decreased postoperative pain and narcotics use, shorter hospital length of stay, faster recover and quicker return to work and normal activity. This paper describes the different minimally invasive techniques that are currently available for the treatment of degenerative disease of the lumbar spine.
