坐骨神経切断後の犬膝関節における関節軟骨(大腿骨の膝関節面および脛骨の上関節面)の分裂線について

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With the works in my mind of the senior students of the class who have taken up the appearance of atrophy in their studies of age change of the splitting lines, as well as Dr. Mori's records (1971) of the same laboratory on the change of splitting lines of mucous membrane of tongue in his research of the atrophy process of tongue, the author have examined the changing conditions of the respective splitting lines of articular surfaces on both medial and lateral condyles of femur and of tibia in the joint part of dog's knee, by the sciatic nerve amputation and observation of the splitting lines in the said portions at 8 different stages from one week to 6 months after the operation. The following are the conclusions thus obtained : The atrophy of articular cartilages in the knee joint caused by the sciatic nerve amputation, as viewed from the changing condition of the splitting lines, indicates slow atrophy process on account of being out of use. Conspicuous transverse and longitudinal atrophies are distinguishable only in the patellar articular surface of the knee joint, while the atrophy process of each of all articular surfaces of knee joint, or the patellar surface and both medial and lateral condyles of femur and of tibia, is learned to be the slow one for nonuse.
1977-03-31