Abstract
We treated 7 patients (8 hips) with coxarthrosis caused by acetabular dysplasia. The average age of the patients was 43 years (range from 28 to 54 years). The average follow-up period was 3 years 1 month (from 9 months to 7 years 8 months). The average postoperative JOA score improved from 81.4 to 94.9 points.
We performed the modified Spitzy shelf operation in all of the cases. The shelf operation has fewer complications, and is less invasive than the rotational arthroplasty or the Chiari osteotomy. It has been reported that clinically good results of the modified Spitzy shelf operation were achieved in patients with mild or moderate acetabular dysplasia, slight or no narrowing of the hip-joint space, and whose age at operation was less than 30 years. We attribute our good results of this operation to careful patient selection according to that indication. And some patients with advanced coxarthrosis can get long asymptomatic term by this operation.
