A ten-year follow-up study of Charnley total hip replacements.

概要

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Clinical and radiological results of the cases of Charnley THR, which were followed up for over ten years, were discussed.Materials consists of 23 hips (21 patients), of which 6 hips were in male and 15 hips in female. Clinical results were evaluated by hip score of Jpn. Orthop. Ass. and radiological results were assessed by the method of Kawauchi et al.80 points or more of hip score were obtained in 8 hips, 79 to 70 points in 4 hips, and 69 points or less in 11 hips.In comparison between 8 hips of 80 points or more and 11 hips of 60 points or less, the latter had more technical problems such as high inclination of socket angle, over-reming of acetabular bottom and imperfect packing of cement in the femoral shaft, than the former.Another important factor influencing the long term result seemed to be osteoporosis.In conclusion, in order to maintain satisfactory resultsfor long time after THR, it may be necessary to do more perfect procedures technically and to prevent the development of osteoporosis.