发育不良
医学
髋臼
解剖
口腔正畸科
髋关节发育不良
外科
病理
射线照相术
作者
L. Y. Li,L. J. Zhang,Q. W. Li,Qun Zhao,Jingyu Jia,Tzung Chi Huang
出处
期刊:The journal of bone and joint surgery
[British Editorial Society of Bone and Joint Surgery]
日期:2012-12-01
卷期号:94-B (12): 1625-1631
被引量:51
标识
DOI:10.1302/0301-620x.94b12.29958
摘要
The purpose of this study was to investigate the development of the osseous acetabular index (OAI) and cartilaginous acetabular index (CAI) using MRI. The OAI and CAI were measured on the coronal MR images of the hip in 81 children with developmental dysplasia of the hip (DDH), with a mean age of 19.6 months (3 to 70), and 241 normal control children with a mean age of 5.1 years (1 month to 12.5 years). Additionally the developmental patterns of the OAI and CAI in normal children were determined by age-based cross-sectional analysis. Unlike the OAI, the normal CAI decreased rapidly from a mean of 10.17° (sd 1.60) to a mean of 8.25° (sd 1.90) within the first two years of life, and then remained constant at a mean of 8.04° (sd 1.65) until adolescence. Although no difference in OAI was found between the uninvolved hips in children with unilateral DDH and normal hips (p = 0.639), the CAI was significantly different between them both (p < 0.001). The normal CAI has fully formed at birth, and is maintained constantly throughout childhood. The CAI in the unaffected hips in children with unilateral DDH is also mildly dysplastic.
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