[原著］ペルテス病における臼蓋変化のX線学的研究
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概要
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Radiographs of 86 children with unilateral Perthes' disease were examined to idenify the acetabular changes. When acetabular hypertrophy was seen on the affected side in early stage of the disease, especially, enlargement of the acetabular height and width of more than 2mm, the condition indicated a poor prognosis. The acetabular hypertrophy which appeared prior to the femoral head deformity seemed to be a primary changes. Cases with severe femoral head deformity showed secondary acetabular changes due to adaptation to the femoral head. As the femoral head became larger or more deformed, the acetabulum became shallower and more inclined. Considering biological plasticity, containment therapy is necessary at an early stage. Containment therapy in late stages may incline the lateral edge of the acetabulum in too steep a manner. Acetabular epiphysis-the secondary ossification center appearing in the rim of the acetabulum-was seen in 40 cases. In 26 of these, acetabular epiphysis was found earlier on the Perthes'side than on the normal side, and in the other 14 cases, acetabular epiphysis was found almost simultaneously on both sides. Cases with a more deformed femoral head tended to show earlier appearance of acetabular epiphysis than those with less deformity. It was suspected that a large or deformed femoral head exerts excessive pressure on the upper acetabular rim and promotes the early appearance of a secondary ossification center.
- 琉球医学会の論文
- 1994-00-00
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