Cementless total hip arthroplasty for osteoarthrosis in patients between the ages of 40 and 59.

概要

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Primary total hip arthroplasties were performed in 60 patients (63 hips) between the ages of 40 and 59 using Harris-Galante prostheses. The minimum follow-up period was five years. The average follow-up period was six years and nine months. The average age of the patients at operation was 52.8 years. The average preoperative J.O.A. score (similar to the Harris hip score) was 43.5 points, which improved to 91.5 points at the final follow-up examination. Seven hips had thigh pain. Three had component loosening and the remaining four had no pain within three years and six months after operation. Two hips developed femoral osteolysis more than five years after operation. The incidence of thigh pain and femoral osteolysis is less frequent in comparison with that in the United States. The reason for this is that in Japan the rehabilitation program after THA is slower, activity of the patients is lower, and weight of the patients is lighter, compared to those of patients in the United States. Therefore, the possibility that the incidence of osteolysis after THA will increase in the future in Japan is being considered.
日本関節病学会の論文