AIM: To assess the results of a modified technique for scleral fixation of a posterior chamber intraocular lens(IOL) in eyes which had deficient of posterior capsular support.METHODS: This retrospective study was comp...AIM: To assess the results of a modified technique for scleral fixation of a posterior chamber intraocular lens(IOL) in eyes which had deficient of posterior capsular support.METHODS: This retrospective study was comprised of ten patients with deficient posterior capsular support who underwent one-haptic fixation of posterior chamber IOLs, between February 2010 and October 2011. IOL as implanted with one haptic supported on the capsular remnant and the other haptic drawn into the sulcus by anchoring suture without a knot. All patients were evaluated for pre- and postoperative visual acuity, lens centration, intra-and postoperative complications.RESULTS: A knotless, one-haptic fixation of posterior chamber IOLs has successfully been performed on ten eyes. All cases had inadequate capsular support(i.e. a capsular tear ranged from 5 to 7 clock hours). The average age was 74.25 ±8.87y(SD). The average postoperative uncorrected visual acuity was 0.51 log MAR.Complications included hyphema in one eye, a mild inflammatory reaction in the anterior chamber in two eyes, and a transient rise in IOP in one eye. Neither IOL tilt nor dislocation was observed and there were no later complications.CONCLUSION: In the presence of insufficient capsular support, a knotless, one-haptic fixation of posterior chamber IOLs is a safe and viable option which reduces the operation time, and minimizes postoperative suture-related complications.展开更多
INTRODUCTION Radical prostatectomy is the standard for the cure of localized prostate cancer. With the development of laparoscopic and robotic techniques, laparoscopic radical prostatectomy （LRP） or robotic-assisted...INTRODUCTION Radical prostatectomy is the standard for the cure of localized prostate cancer. With the development of laparoscopic and robotic techniques, laparoscopic radical prostatectomy （LRP） or robotic-assisted radical prostatectomy （RARP） has been widely accepted with advantages of less invasiveness, shorter recovery, less blood loss, and better visualization of the operative region compared to open techniques.展开更多
Knotless polyethylene(PE)netting is widely used in fisheries because of its excellent hydrodynamic performance and low cost.Netting deformation and the surrounding flow field distribution play an important role in det...Knotless polyethylene(PE)netting is widely used in fisheries because of its excellent hydrodynamic performance and low cost.Netting deformation and the surrounding flow field distribution play an important role in determining the hydrodynamic characteristics of netting in moving water.In order to investigate the effect of solidity ratio and attack angle on drag,netting deformation,and flow field distribution through the netting,a fluid-structure interaction(FSI)model based on a one-way coupling combining the shear stress turbulent(SST)k-omega model and the large deformation nonlinear structural finite element model was evaluated.Our results showed the difference between the parallel and normal drag forces found in the present numerical model and experimental flume tank data were 9.17%and 11.58%,respectively.The mean relative error in the inclined hydrodynamic drag for different flow velocities and attack angles was 8.35%,6.69%,and 5.37%for the nettings 1,2,and 3,respectively.These results show that the present numerical simulation based on FSI one-way coupling can be used to examine hydrodynamic forces on netting.The flow simulation results show that there is a noticeable flow velocity decrease through the netting and a rather large velocity reduction region downstream from the netting for different attack angles.These results reveal the existence of turbulent flow due to the netting wake.It was found that the equivalent stress and total deformation increase as the flow velocity increases and solidity ratio decreases.展开更多
This study evaluated the hydrodynamic forces produced by whole panels of hand-made(geometrically different)rope meshes typically found in midwater trawls.Experimental treatments included both knotted and knotless mesh...This study evaluated the hydrodynamic forces produced by whole panels of hand-made(geometrically different)rope meshes typically found in midwater trawls.Experimental treatments included both knotted and knotless meshes constructed of helix composite ropes,conventional braided nylon(PA)ropes,and twisted polyethylene(PE)ropes.Direct measurement of lift(L)and drag(D)forces were conducted using controlled flume tank experiments on panels oriented at 21°relative to the flow.For knotted netting,our results showed that the hydrodynamic forces(L and D)were statistically higher for helix ropes compared to conventional ropes of the same diameter.For knotless netting constructed of helix ropes,our primary finding is that the arrangement of helix ropes(S and Z lay)in individual meshes significantly affects the resulting D and Cd of whole netting panels.Arranging the mesh bars in the S-Z-S-Z lay pattern exhibited 29%and 32%lower drag(D)compared to S–S–S–S and S–S-Z-Z lay meshes,respectively.We also use computational fluid dynamics(CFD)to characterize the finescale flow-field around helix and conventional ropes.The resulting streamlines and pressure contours provide a functional explanation for the empirical measurements collected in the flume tank.These results can be useful in informing the design of midwater trawls.展开更多
目的探讨关节镜下双滑轮无结缝线桥固定治疗伴骨质疏松症的肩袖损伤的临床效果。方法回顾性分析2023年1月至2024年12月珠海市人民医院收治的100例伴骨质疏松的肩袖损伤患者资料,按照治疗方式分别纳入双滑轮无结缝线组和单排固定组。双...目的探讨关节镜下双滑轮无结缝线桥固定治疗伴骨质疏松症的肩袖损伤的临床效果。方法回顾性分析2023年1月至2024年12月珠海市人民医院收治的100例伴骨质疏松的肩袖损伤患者资料,按照治疗方式分别纳入双滑轮无结缝线组和单排固定组。双滑轮无结缝线组56例,男28例,女28例;年龄25~71岁,平均(55.42±6.43)岁。单排固定组44例,男21例,女23例;年龄27~73岁,平均(55.76±6.56)岁。比较两组疼痛视觉模拟评分(visual analogue scale,VAS)、美国肩肘协会(American shoulder and elbow surgeons,ASES)评分、加利福尼亚大学洛杉矶分校(university of California at Los Angeles,UCLA)肩关节评分、肩关节Constant-Murley评分、关节活动度、术后并发症和肩袖再撕裂发生率。结果患者术后均随访6个月。术后双滑轮无结缝线组的VAS、ASES评分、UCLA评分、Constant-Murley评分以及肩关节前屈和外旋活动度均优于单排固定组(P<0.05)。双滑轮无结缝线组的肩袖再撕裂发生率、并发症发生率均低于单排固定组(P<0.05)。结论相较单排固定修复,关节镜下双滑轮无结缝线桥固定治疗伴骨质疏松的肩袖损伤,术后患者肩关节功能和活动度恢复更显著,关节僵硬和肩袖损伤再发生率更低。展开更多
目的探讨超早期康复护理对急性跟腱断裂患者腔镜下微创无结锚钉桥接术后功能恢复的影响。方法回顾性分析作者医院2018-03/2022-09月收治的30例军事训练所致急性跟腱断裂腔镜下微创无结锚钉桥接术后患者,按不同护理措施将患者分为对照组(...目的探讨超早期康复护理对急性跟腱断裂患者腔镜下微创无结锚钉桥接术后功能恢复的影响。方法回顾性分析作者医院2018-03/2022-09月收治的30例军事训练所致急性跟腱断裂腔镜下微创无结锚钉桥接术后患者,按不同护理措施将患者分为对照组(n=16)和观察组(n=14),对照组采用常规康复护理,观察组采用超早期康复护理,所有患者均获1年术后随访。比较两组患者术后12 h、3 d、14 d的视觉模拟量表(visual analogue scale,VAS)评分,术后6、12、24、48周美国矫形外科足踝协会(American society of orthopaedic foot and ankle surgery,AOFAS)踝-后足评分,患者满意度和住院时间。结果两组患者VAS评分从术后12 h至2周均呈下降趋势(P均<0.05)且观察组术后12 h、3 d VAS评分明显低于对照组(P<0.05)。两组患者AOFAS踝-后足评分从术后6周至48周均上升,且观察组术后24、48周AOFAS踝-后足评分较6周上升明显(P均<0.05),术后6、12周观察组患者AOFAS踝-后足评分高于对照组(P<0.05)。观察组患者满意度高于对照组,但组间比较差异无统计学意义(P>0.05),观察组患者住院时间明显少于对照组,组间比较差异有统计学意义(P<0.001)。结论对急性跟腱断裂患者微创无结锚钉桥接术后给予超早期康复护理较常规护理能更快速缓解术后疼痛,缩短患者住院时间,提升护理质量,提高患者满意度,值得临床推广应用。展开更多
文摘AIM: To assess the results of a modified technique for scleral fixation of a posterior chamber intraocular lens(IOL) in eyes which had deficient of posterior capsular support.METHODS: This retrospective study was comprised of ten patients with deficient posterior capsular support who underwent one-haptic fixation of posterior chamber IOLs, between February 2010 and October 2011. IOL as implanted with one haptic supported on the capsular remnant and the other haptic drawn into the sulcus by anchoring suture without a knot. All patients were evaluated for pre- and postoperative visual acuity, lens centration, intra-and postoperative complications.RESULTS: A knotless, one-haptic fixation of posterior chamber IOLs has successfully been performed on ten eyes. All cases had inadequate capsular support(i.e. a capsular tear ranged from 5 to 7 clock hours). The average age was 74.25 ±8.87y(SD). The average postoperative uncorrected visual acuity was 0.51 log MAR.Complications included hyphema in one eye, a mild inflammatory reaction in the anterior chamber in two eyes, and a transient rise in IOP in one eye. Neither IOL tilt nor dislocation was observed and there were no later complications.CONCLUSION: In the presence of insufficient capsular support, a knotless, one-haptic fixation of posterior chamber IOLs is a safe and viable option which reduces the operation time, and minimizes postoperative suture-related complications.
文摘INTRODUCTION Radical prostatectomy is the standard for the cure of localized prostate cancer. With the development of laparoscopic and robotic techniques, laparoscopic radical prostatectomy （LRP） or robotic-assisted radical prostatectomy （RARP） has been widely accepted with advantages of less invasiveness, shorter recovery, less blood loss, and better visualization of the operative region compared to open techniques.
基金the National Natural Science Foundation of China(Grand No.31902426,41806110)Shanghai Sailing Program(19YF1419800),China Postdoctoral Science Foundation funded project(2018M630471)Special project for the exploitation and utilization of Antarctic biological resources of Ministry of Agriculture and Rural Affairs(D-8002-18-0097).
文摘Knotless polyethylene(PE)netting is widely used in fisheries because of its excellent hydrodynamic performance and low cost.Netting deformation and the surrounding flow field distribution play an important role in determining the hydrodynamic characteristics of netting in moving water.In order to investigate the effect of solidity ratio and attack angle on drag,netting deformation,and flow field distribution through the netting,a fluid-structure interaction(FSI)model based on a one-way coupling combining the shear stress turbulent(SST)k-omega model and the large deformation nonlinear structural finite element model was evaluated.Our results showed the difference between the parallel and normal drag forces found in the present numerical model and experimental flume tank data were 9.17%and 11.58%,respectively.The mean relative error in the inclined hydrodynamic drag for different flow velocities and attack angles was 8.35%,6.69%,and 5.37%for the nettings 1,2,and 3,respectively.These results show that the present numerical simulation based on FSI one-way coupling can be used to examine hydrodynamic forces on netting.The flow simulation results show that there is a noticeable flow velocity decrease through the netting and a rather large velocity reduction region downstream from the netting for different attack angles.These results reveal the existence of turbulent flow due to the netting wake.It was found that the equivalent stress and total deformation increase as the flow velocity increases and solidity ratio decreases.
基金This project was part of Module H of the Ocean Frontier Institute,funded by the Canada First Research Excellence Fund.
文摘This study evaluated the hydrodynamic forces produced by whole panels of hand-made(geometrically different)rope meshes typically found in midwater trawls.Experimental treatments included both knotted and knotless meshes constructed of helix composite ropes,conventional braided nylon(PA)ropes,and twisted polyethylene(PE)ropes.Direct measurement of lift(L)and drag(D)forces were conducted using controlled flume tank experiments on panels oriented at 21°relative to the flow.For knotted netting,our results showed that the hydrodynamic forces(L and D)were statistically higher for helix ropes compared to conventional ropes of the same diameter.For knotless netting constructed of helix ropes,our primary finding is that the arrangement of helix ropes(S and Z lay)in individual meshes significantly affects the resulting D and Cd of whole netting panels.Arranging the mesh bars in the S-Z-S-Z lay pattern exhibited 29%and 32%lower drag(D)compared to S–S–S–S and S–S-Z-Z lay meshes,respectively.We also use computational fluid dynamics(CFD)to characterize the finescale flow-field around helix and conventional ropes.The resulting streamlines and pressure contours provide a functional explanation for the empirical measurements collected in the flume tank.These results can be useful in informing the design of midwater trawls.
文摘目的探讨关节镜下双滑轮无结缝线桥固定治疗伴骨质疏松症的肩袖损伤的临床效果。方法回顾性分析2023年1月至2024年12月珠海市人民医院收治的100例伴骨质疏松的肩袖损伤患者资料,按照治疗方式分别纳入双滑轮无结缝线组和单排固定组。双滑轮无结缝线组56例,男28例,女28例;年龄25~71岁,平均(55.42±6.43)岁。单排固定组44例,男21例,女23例;年龄27~73岁,平均(55.76±6.56)岁。比较两组疼痛视觉模拟评分(visual analogue scale,VAS)、美国肩肘协会(American shoulder and elbow surgeons,ASES)评分、加利福尼亚大学洛杉矶分校(university of California at Los Angeles,UCLA)肩关节评分、肩关节Constant-Murley评分、关节活动度、术后并发症和肩袖再撕裂发生率。结果患者术后均随访6个月。术后双滑轮无结缝线组的VAS、ASES评分、UCLA评分、Constant-Murley评分以及肩关节前屈和外旋活动度均优于单排固定组(P<0.05)。双滑轮无结缝线组的肩袖再撕裂发生率、并发症发生率均低于单排固定组(P<0.05)。结论相较单排固定修复,关节镜下双滑轮无结缝线桥固定治疗伴骨质疏松的肩袖损伤,术后患者肩关节功能和活动度恢复更显著,关节僵硬和肩袖损伤再发生率更低。
文摘目的探讨超早期康复护理对急性跟腱断裂患者腔镜下微创无结锚钉桥接术后功能恢复的影响。方法回顾性分析作者医院2018-03/2022-09月收治的30例军事训练所致急性跟腱断裂腔镜下微创无结锚钉桥接术后患者,按不同护理措施将患者分为对照组(n=16)和观察组(n=14),对照组采用常规康复护理,观察组采用超早期康复护理,所有患者均获1年术后随访。比较两组患者术后12 h、3 d、14 d的视觉模拟量表(visual analogue scale,VAS)评分,术后6、12、24、48周美国矫形外科足踝协会(American society of orthopaedic foot and ankle surgery,AOFAS)踝-后足评分,患者满意度和住院时间。结果两组患者VAS评分从术后12 h至2周均呈下降趋势(P均<0.05)且观察组术后12 h、3 d VAS评分明显低于对照组(P<0.05)。两组患者AOFAS踝-后足评分从术后6周至48周均上升,且观察组术后24、48周AOFAS踝-后足评分较6周上升明显(P均<0.05),术后6、12周观察组患者AOFAS踝-后足评分高于对照组(P<0.05)。观察组患者满意度高于对照组,但组间比较差异无统计学意义(P>0.05),观察组患者住院时间明显少于对照组,组间比较差异有统计学意义(P<0.001)。结论对急性跟腱断裂患者微创无结锚钉桥接术后给予超早期康复护理较常规护理能更快速缓解术后疼痛,缩短患者住院时间,提升护理质量,提高患者满意度,值得临床推广应用。
