CTによる変形性股関節症の定量的診断
1982 年 31 巻 1 号 p. 193-197
詳細
1982 年 31 巻 1 号 p. 193-197
Sixteen normal hips in 8 persons and 29 osteoarthritic hips in 19 patients were examined by a computed tomography (CT), calculating CT value of the femoral head and acetabulum. Atrophy of muscles around the hip joints was also measured on CT by planimeter.
The results obtained were as follows:
1. The mean CT value of the normal femoral head was 238±8.6 (H. U.) and that of the acetabulum was 199±2.8.
2. The mean CT value of the osteoarthritic femoral head increased in accordance with degenerative stage, reaching to the maximum value of 351±6.8 at the progressive stage, while it decreased to 285±21.3 at the late stage.
3. The mean CT value of the acetabulum showed a high score of 285±21.3 already at the early stage and remained stationary.
4. Atrophy of the gluteus medius muscle was observed at early stage; the gluteus maximus muscle at the progressive stage, and the tensor fasciae latae, gluteus minimus and iliopsoas muscle at the late stage.
