Papavasiliou V A, Piggott H
J Pediatr Orthop. 1983 Feb;3(1):22-7. doi: 10.1097/01241398-198302000-00004.
The thickness of the acetabular floor and the horizontal diameter of the femoral head often appear enlarged on X-ray films of congenitally dislocated hips, particularly in the later stages. These distances were, therefore, measured and compared with the normal side in 49 strictly unilateral cases. Increased floor thickness was an early change and usually persisted, often in spite of a satisfactory reduction. Increased head diameter was detectable later and these two features together increased the distance between the centre of the femoral head and the midline of the body. This lateral displacement, even when the head is well covered, increases abductor effort and force transmitted to the femoral head on weight bearing and may have an adverse effect on the joint's long term future.
先天性髋关节脱位患者的X线片上，髋臼底厚度和股骨头水平直径常增大，尤其是在疾病后期。因此，对49例严格单侧患病的病例进行了这些距离的测量，并与正常侧进行比较。髋臼底厚度增加是早期变化，通常会持续存在，即使复位效果良好也常常如此。股骨头直径增加在后期才可以检测到，这两个特征共同增加了股骨头中心与身体中线之间的距离。这种侧方移位，即使股骨头覆盖良好，也会增加外展肌的力量以及负重时传递到股骨头的力，可能对关节的长期预后产生不利影响。
