【摘要】 目的 髌骨形态异常被认为是髌骨脱位的高危因素，动物实验表明早期髌骨脱位可导致髌骨形态的发育异常。本实验的目的是研究在髌骨脱位模型中，早期复位能否改善兔髌骨形态的发育。方法 选取2个月龄新西兰大白兔45只，随机分为3组各15只。组1、组2行髌骨脱位手术，组3（对照组）行假手术。1个月后，组2行髌骨复位。于复位后1个月和3个月分析各组髌骨形态的变化。结果 术后1个月，与组1相比，组3髌骨宽度更宽、Wiberg角更小（P<0.05）；组2 Wiberg角小于组1(P<0.05)，其余指标差异无统计学意义。术后3个月，与组1相比，组2与组3在髌骨宽度、厚度方面均更宽、更厚，Wiberg角更小（P<0.05），且组1髌骨关节面明显变平；组3的Wiberg指数小于组1(P<0.05)。结论 髌骨脱位能够导致髌骨形态结构变化，早期复位可改善髌骨形态学异常的程度。更多还原

【Abstract】 Objective Patellar morphology abnormalities are considered as ahigh-risk factor for patellar dislocation,and animal experiments have shown that early patellar dislocation can lead to abnormal development of patellar morphology.The purpose of this experiment is to study whether early reduction can improve the development of patellar morphology in rabbits in apatellar dislocation model.Methods 45 rabbits aged 2 months were selected and randomly divided into 3 groups,with 15 rabbits in each group.Group 1 and Group 2 underwent patellar dislocation surgery,while Group 3 underwent sham surgery.One month later,Group 2 underwent patellar reduction.The changes in patellar morphology of each group were analyzed at 1 month and 3 months after patellar reduction.Results At 1 month postoperatively,compared with Group 1,Group 3 demonstrated greater patellar width and asmaller Wiberg angle(P<0.05).The Wiberg angle in Group 2 was smaller than that in Group 1(P<0.05),while no statistically significant differences were observed in the remaining parameters.At 3 months postoperatively,compared with Group1,both Groups 2 and 3 exhibited greater patellar width and thickness,along with asmaller Wiberg angle(P<0.05).Additionally,the patellar articular surface in Group 1 appeared significantly flattened.The Wiberg index in Group 3 was lower than that in Group 1(P <0.05).Conclusion Patellar dislocation can lead to morphological changes in the patella,and early reduction of the patellacan improve the degree of patellar morphological abnormalities.更多还原