Total hip replacement with and without osteotomy of the greater trochanter. Clinical and biomechanical comparisons in the same patients.

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Abstract
Twelve patients with bilateral hip replacement, one side performed with a trochanteric osteotomy and the other without osteotomy, were analyzed by review of the clinical records, the findings on physical examination, preoperative and postoperative Harris hip scores, each patient's evaluation, biomechanical analysis of the preoperative and postoperative roentgenograms of the hips and pelvis, and force-plate gait analysis. All operations yielded good results clinically but the majority of patients preferred the replacement done without osteotomy. Blood loss and trochanteric bursitis were greater problems in patients who had an osteotomy. There were no differences between the two groups in the postoperative Harris scores or in the biomechanical measurements made on the preoperative and postoperative roentgenograms except for the change in the abductor-muscle length. Changes in this parameter correlated well with the patients' symptoms and clinical findings.

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