Treatment of Hip Osteoarthritis with Severe Acetabular Bone Defects by Total Hip Arthroplasty Using the Restoration GAP II Reinforcement Ring: A Case Report

Therefore, the Restoration GAP II reinforcement ring, which has multiple screw insertion points and customizable hook bending, was selected for reinforcement. Given the poor bone quality, autologous bone grafting was considered unsuitable, and bone cement was used to fill the defects. Total hip arthroplasty was successfully performed using the reinforcement ring, and the patient was allowed full weight-bearing ambulation from post-operative day 1.At 18 months after surgery, she reported no recurrence of pain or difficulties in walking. This case suggests that satisfactory outcomes can be achieved in cases with severe acetabular bone defects through the appropriate application of a reinforcement ring.