幼儿发育性髋脱位髋臼前倾的三维CT研究  

Evaluation of acetabular anteversion in developmental dislocation of the hip in infant by three-dimensional computed tomography

作　　者：李连永[1] 赵群[1] 

机构地区：[1]中国医科大学附属第二医院(盛京医院)小儿骨科,沈阳110004

出　　处：《中国矫形外科杂志》2005年第17期1314-1315,1318,共3页Orthopedic Journal of China

摘　　要：[目的]利用髋关节的三维CT影像,来探讨3岁以下幼儿发育性髋关节脱位(developmentaldislocationofthehip,DDH)髋臼前倾角(Acetabularanteversion,AA)的改变。[方法]对44例3岁以下单侧DDH患儿的3DCT影像资料进行分析,正常侧髋作为对照,测量髋臼的前倾角。[结果]正常侧髋臼AA为(10·0±4·7)°,脱位侧为(18·1±4·5)°,P<0·01。按年龄分组,正常侧髋臼AA:小于18个月组为(9·2±4·3)°,大于等于18个月组为(10·6±4·9)°,P=0·34。脱位侧髋臼AA:小于18个月组为(16·2±4·5)°,大于等于18个月组为(19·2±4·1)°,P=0·03。[结论]三维CT能清晰地显示幼儿DDH髋臼的形态。脱位后,髋臼前倾角明显增加,且脱位时间越长,髋臼前倾越明显。了解髋臼的前倾情况,对DDH的治疗具有重要意义。[ Objective] To evaluate the acetabular anteversion of DDH in children under 3 years old by 3DCT. [ Method] Forty-four children under 3 years, with unilateral DDH, were analysed using 3DCT, the acetabular anteversion （AA） were measured in normal and abnormal hips. [ Result ] The AA were （ 10. 0 ± 4.7 ） °in normal hips and （ 18. 1 ± 4. 5 ） ° in dysplasia hips respectively, there were significantly statistical differences, （P 〈0. 01 ） . In all normal hips, the AA were （9. 2 ±4. 3）° in group younger than 18 months, and （ 10. 6 ±4. 9）° in group older than 18 months, （P = 0. 34）. In all dyspalsia hips, the AA were （ 16. 2 ± 4. 5） ° in group younger than 18 months, and （ 19. 2 ±4. 1 ） ° in group older than 18 months, （P = 0. 03）. [ Conclusion] 3DCT reconstruction of hip can demonstrate the pathologic morphology of DDH in infant clearly. In children with DDH under 3 years old, the acetabular anteversion in abnormal hip increased significantly, furthermore, the longer the hip dislocated, the more evidently the acetabulum anteverted.

关 键 词：发育性髋关节脱位 髋臼前倾 幼儿 三维CT 发育性髋脱位 髋臼前倾角 三维CT影像 CT研究 DISLOCATION 3岁以下 

分 类 号：R816.92[医药卫生—放射医学]