BACKGROUND AND PURPOSE: Protrusio is a central acetabular defect resulting from migration of the femoral head medial to Kohler’s line. Protrusio can develop in association with a number of conditions that affect the metabolism or mechanical behavior of the periacetabular bone. Total hip arthroplasty (THA) for acetabular protrusio requires reconstruction of the contained cavitary defect. The purpose of this study ...
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