Smith J T, Matan A, Coleman S S, Stevens P M, Scott S M
Shriners Hospital for Children, Intermountain Unit, Salt Lake City, Utah, USA.
J Pediatr Orthop. 1997 Mar-Apr;17(2):165-9. doi: 10.1097/00004694-199703000-00005.
We reviewed the radiographs of 72 hips, 47 with developmental dysplasia of the hip (DDH), and 25 normal hips, to determine the timing of the normal appearance of the acetabular teardrop figure and the value of teardrop development after reduction of the hip in predicting outcome. In normal hips, all children had a teardrop figure by age 18 months. In the 47 hips with DDH, no teardrop figure appeared until the hip was reduced. The DDH hips were divided into two groups based on the success of the initial reduction. By using statistical analysis, we found that the appearance of the acetabular teardrop within 6 months after reduction of the hip is strongly associated with a favorable long-term outcome. We believe that the appearance of the teardrop is the earliest radiographic sign that a stable, concentric reduction of the hip has been achieved.
我们回顾了72例髋关节的X线片，其中47例为发育性髋关节发育不良（DDH），25例为正常髋关节，以确定髋臼泪滴影正常出现的时间以及髋关节复位后泪滴发育情况在预测预后方面的价值。在正常髋关节中，所有儿童在18个月龄时均出现泪滴影。在47例DDH髋关节中，直到髋关节复位才出现泪滴影。根据初次复位的成功情况，将DDH髋关节分为两组。通过统计分析，我们发现髋关节复位后6个月内髋臼泪滴影的出现与良好的长期预后密切相关。我们认为泪滴影的出现是髋关节已实现稳定、同心圆复位的最早影像学征象。
