<原著>ラットの膝関節伸展位固定の膝屈筋におよぼす影響

概要

論文の詳細を見る
It is well known that dislocation or subluxation of the hip joint can be produced in young rat by immobilizing the knee joint in extension. In the present experiment, the left knees of four-week-old Wistar rats were immobilized in extension by intramedullary insertion of a pin through the tibia and femur across the knee joint. Histochemical and histometrical analyses were carried out to observe the effect of knee immobilization on the hamstrings. Twelve weeks after operation, a distal third of medial head of the biceps femoris muscle was excised at the same level on both sides and stained for ATPase (pH 9.4). Histometrical analysis was done by employing a photograph of whole cross-sectional area of the muscle. Significant changes were not observed in the diameter of both fiber types and in the number of type II fibers. On the other hand, there was about four time increase of the number of type I fiber and fiber type proportion of the type I fiber was increased significantly on the immobilized side. Characteristic anterior distribution of type I fiber around the neurovascular bundle was not changed by the knee immobilization.
近畿大学の論文
1977-09-25