Pirpiris Marinis, Payman K Rad, Otsuka Norman Y
Shriners Hospitals for Children, Los Angeles, CA 90020, USA.
J Pediatr Orthop. 2006 May-Jun;26(3):310-5. doi: 10.1097/01.bpo.0000214920.54619.c7.
This is a series of 7 children (14 hips) with a mean age of 7.3 years (range, 3.3-10.5 years) and an underlying diagnosis of developmental dysplasia of the hips and no previous open-hip surgery who underwent plain radiographic and magnetic resonance imaging (MRI) measures of bony acetabular index. There was a significant correlation between the measurement of acetabular index using plain radiography and MRI, with a Spearman correlation coefficient of 0.88 (95% confidence interval, 0.61-0.96; P<0.001) and a mean difference between the 2 measures of 0.36+/-6.5 degrees. Furthermore, the bony and cartilaginous acetabular indexes as measured by MRI had a significant correlation with a Spearman correlation coefficient of 0.88 (95% confidence interval, 0.80-0.98; P<0.001). We suggest that plain radiography is still an appropriate tool for follow-up for the nonoperated hip with developmental dysplasia and may be a good indicator of hip cartilaginous development.
这是一组7名儿童（14个髋关节），平均年龄7.3岁（范围3.3 - 10.5岁），初步诊断为发育性髋关节发育不良，且之前未接受过髋关节开放手术，他们接受了骨盆平片和磁共振成像（MRI）检查以测量骨性髋臼指数。使用平片和MRI测量髋臼指数之间存在显著相关性，Spearman相关系数为0.88（95%置信区间，0.61 - 0.96；P<0.001），两种测量方法的平均差异为0.36±6.5度。此外，MRI测量的骨性和软骨性髋臼指数之间存在显著相关性，Spearman相关系数为0.88（95%置信区间，0.80 - 0.98；P<0.001）。我们认为，对于发育性髋关节发育不良且未接受手术的髋关节，骨盆平片仍是一种合适的随访工具，并且可能是髋关节软骨发育的良好指标。
