Rate of wear in total hip replacement.

摘要: The wear of high molecular weight polyethylene sockets was measured on radiographs, over a period 9 to 10 years, in group patients whose ages averaged 73.3 years at the end period. average rate 0.15 mm/year and 68 per cent followed this pattern. Wear more than 2.5 mm occurred 15 cent. There diminution with passage time; second 5 approximately 40 less first years. Body physical activity did not appear have any relationship final amount wear. In series very disabled subjects under 30 age (33 patients, 59 hips, only for an 38.4 months) rather previous series. Most remarkable performance 4 below 50, who were considered completely normal their (category A); three these wore main