[Sugioka's trans-trochanteric osteotomy. Results of interventions 1975-1983].

The long-term results of 46 Sugioka osteotomies are presented: In 22 patients no joint replacement had yet been necessary, and 17 hip joints had already been replaced by total hip prostheses. Of the 22 preserved joints, 12 were graded as clinically excellent and good, 10 as fair or poor. The radiological course showed worsening osteoarthritic changes in almost all cases. In the "survival curve" for the Sugioka osteotomy in the group with 17 total hip prostheses the most significant slope can be seen during the first 3 years postoperatively; between 5 and 10 years there are no failures; and then the curve descends again. Fair and poor results are noted most frequently between 6 and 10 years after the operation in the group of 22 patients with no joint replacement. The preoperative extent of necrosis and the radiological stage are the main factors determining the result. Over the years it has been possible to define a narrow spectrum of indications: the greatest benefit is obtained in young, cooperative patients with necrotic sectors of about 90 degrees and good function of the hip joint.