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Some roentogenographic changes with aging are observed in the acromioclavicular, sacroiliac, hip joint and lumbar spine. The total number is 1274. In the third decade, bony spur formation is found in the sacroiliac joint. With aning, bony spur formation appears also in the region of the hip joint and lumbar spine. In addition, alter the fifth decade subchondral sclerosis and disc narrowing become visible. Changes of the lumbar spine, especially at the level of L-4 and L-5, become more remarkable between the fourth and the fifth decade. Osteoporosis is frequently observed in female between the sixth and seventh decade. In the acromioclavicular joint, the changes are not so remarkable as in others, but more remarkable between the sixth and seventh decade. Bony spur formation is due both to the weitht bearing (static element) and to the joint motion (dynamic element), and the main element is thought to be the traction of the joint capsule.
西日本整形・災害外科学会の論文