摘要
目的:通过三维CT头影测量分析,探讨保存髁突软骨在生长期山羊囊内骨折手术治疗中的作用。方法:6个月龄山羊12只,随机分为实验组(n=8)和对照组(n=4),实验组双侧髁突造成囊内骨折并同期行手术复位固定,一侧保留髁突软骨,另一侧切除髁突软骨。术后即刻、3个月和6个月行头颅CT扫描,采用SimPlant11.2软件进行髁突高度的三维测量,通过SAS 6.12软件包对数据进行统计学分析,评价下颌支的生长发育情况。结果:保留髁突软骨组术后3个月和6个月,下颌支的平均高度为(51.85±1.67)㎜和(56.25±4.49)㎜,切除髁突软骨组为(45.18±1.31)㎜和(46.59±1.66)㎜,对照组为(51.52±1.95)㎜和(56.19±3.38)㎜。其中,保留髁突软骨组和对照组无统计学差异(P>0.05);保留髁突软骨组和切除髁突软骨组有统计学差异(P<0.05)。结论:手术复位固定生长期髁突囊内骨折时,保存髁突软骨不会影响下颌支生长发育;破坏髁突软骨则导致下颌支生长发育受限。
PURPOSE： To evaluate the role of retaining condylar cartilage on open reduction and intemal fixation （ORIF） of intracapsular condylar fracture （ICF） in growing goats by three-dimensional （3D） computed tomography （CT） analysis. METHODS： Twelve 6-month-old goats were randomly divided into two groups, experimental group （n=8） and control group （n=4）. ICF was created in bilateral mandibular condyles and then treated with ORIF. One side of the condylar cartilage was retained, while the other side of the condylar cartilage was removed. Condyles in the control group were untouched. CT scans were taken immediately after surgery, 3 months and 6 months post-operation to evaluate the growth of the ramus. Heights of the ramus were measured by 3D-CT analysis. SAS 6.12 software package was used for statistical analysis. RESULTS ： Heights of the ramus in cartilage retained group immediately after operation, 3 months and 6 months postoperatively were （42.47±0.99）mm, （51.85±1.67）mm and （56.25±4.49）mm, respectively, while （42.69±0.76）mm, （45.18± 1.31）mm and （46.59±1.66）mm in cartilage removed group, and （42.61±0.99）mm, （51.52±1.95）mm and （56.19±3.38）mm in control group. There were no significant differences between the control group and cartilage retained group （P〉0.05）. While significant differences were shown between the cartilage retained group and cartilage removed group in both 3 months and 6 months postperative measurements （P〈0.05）. CONCLUSION： ORIF for ICF in the growing goats has no effect on condylar growth when the condylar cartilage is retained, but growth restriction occurs when the cartilage is removed. Supported by Research Fund of Science and Technology Commission of Shanghai Municipality （08DZ2271 100）.
出处
《中国口腔颌面外科杂志》
CAS
2011年第2期119-125,共7页
China Journal of Oral and Maxillofacial Surgery
基金
上海市科学技术委员会资助项目(08DZ2271100)
关键词
髁突囊内骨折
三维CT头影测量
开放性复位固定
生长期山羊
Intracapsular condylar fracture
Three-dimensional computed tomography cephalometry
Open reduction and internal fixation
Growing goat
