CT测量髋臼前唇连线诊断髋臼发育不良性股骨头前脱位

Study on the diagnosis of adult displastic femoral head anterior sublaxation by measuring the line between anterior acetabulum labra in CT

目的:研究成人髋臼发育不良性股骨头前脱位的CT诊断标准。方法:随机调查100例正常髋关节CT表现,观察和测量髋臼前唇连线与股骨头的关系以及股骨头前间隙和后间隙,与28例髋臼发育不良的CT片作对照。对正常组和髋臼发育不良组所得数据采用t检验作统计学分析。结果:髋臼前唇连线与股骨头前缘的关系的测量值和股骨头前后间隙测量值在正常组和髋臼发育不良组之间对比具有统计学差异。结论:正常成人在股骨头中点层面上,股骨头前缘不超出髋臼前唇连线的延长线。测量髋臼前唇连线与股骨头的关系可作为诊断股骨头前脱位的客观标准。

Objective：To study the diagnostic criterion of adult displastic femoral head anterior sublaxation. Methods：CT findings of 100 cases of normal hips were investigated randomly, meanwhile, the relation of femoral head and the prolonged line both anterior aeetabulum labra, the femoral head abterior space, the femoral head posterior space were evaluated. Correlated analysis was applied to reveal the correlations between the normal group and 28 cases with acetabulum displasia. T-text was applied for the normal groups and the displasia group. Results： There was significant statistical differentce between the normal group and the acetabulum diaplasia group by revealing the relations through measuring both femoral head front edges and anterior aeetabulum labra line, the femoral head abterior space, and the femoral head posterior space. Conclusion： The normal femoral head front edge would not exceed the prolonged line of anterior aeetabulum labras. It is an objective criterion for diagnosing the femoral head anterior sublaxatinn.