发育性髋关节脱位儿童与正常儿童软骨性髋臼前倾角的MRI研究MRI measurement of cartilaginous acetabular anteversion in DDH and normal children
吴添龙;贾惊宇;涂以济;徐浚怀;陈伟才;曹雪琴;刘素云;程细高;
摘要(Abstract):
[目的]通过MRI观察发育性髋关节脱位(developmental dislocation of hip,DDH)患儿病变髋软骨性髋臼是否存在过度前倾,测量不同年龄组正常儿童的软骨性髋臼前倾角(articaginous acetabular anteversion,CAA)并分析其发育演变。[方法]回顾性收集55例DDH儿童和222例正常儿童的髋关节MRI影像学资料。病例组:男22例,女33例;年龄6~60个月,平均19个月。共有73例脱位髋、9例半脱位髋、10例发育不良髋和18例未受累髋。对照组:男132例,女90例;年龄3个月~15岁,平均6.2岁。共444例正常髋,并以患者年龄(岁)为单位分为15个亚组。通过MRI测量各组髋关节的CAA,统计学分析对比病例组和对照组以及对照组各组间CAA是否存在统计学差异。[结果]DDH儿童脱位与半脱位髋关节的CAA均大于未受累髋关节和正常儿童髋关节的CAA,差异具有统计学意义(P<0.05)。DDH儿童脱位髋关节CAA大于发育不良髋关节的CAA,差异具有统计学意义(P<0.05)。正常对照组儿童髋关节CAA在不同年龄组间不存在相关性(r<0,P>0.05)。所有病例均未发现髋臼后倾现象。[结论]DDH儿童脱位与半脱位髋关节的CAA是存在过度前倾的;正常的CAA在人们出生时就已完全形成,并且不随年龄的增长而发生明显改变。作者认为CAA更能反映髋臼的真实前倾角,采用MRI对DDH患儿的软骨结构进行评估可用于指导DDH的术式选择。
关键词(KeyWords): 软骨性髋臼前倾角;发育性髋关节脱位;磁共振
基金项目(Foundation): 国家自然科学基金资助项目(编号:81060147)
作者(Author): 吴添龙;贾惊宇;涂以济;徐浚怀;陈伟才;曹雪琴;刘素云;程细高;
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