Femoral Revisional Arthroplasty using Proximal Modular Femoral Stem: Short Term Follow Up

Hwang, Sung Kwan; Lee, Dong Kyu

Abstract

PURPOSE
The aim of this study was to evaluate the clinical and radiological results of a cementless femoral revision using a proximal modular stem for 38 hips (38 patients) with femoral osteolysis after primary total hip arthroplasty. MATERIALS AND METHODS: Thirty-eight hips (38 patients), which had been revised with a proximal modular femoral component were included in this study. All 38 patients were treated using the posterolateral approach. The minimum follow-up period was 2 years. The stem stability was checked radiographically and the hip function was evaluated using the Harris hip score. RESULTS: Thirty-eight patients were follow-up for an average of 3.2 years. The Harris hip score was improved from an average of 49 points to an average of 84 points. Radiographically, satisfactory results were noted in 20 (52.6%) of the 38 hips at the latest follow-up. Complications were encountered in 8 hips (21%). An intraoperative femoral crack were encountered in 6 hips; circumferential wiring in 4 hips, and screw fixation in 2 hips. All 6 femoral cracks were healed within 3 months. Postoperative hip dislocation occurred in 2 hips (5.3%), which was successfully managed by manual reduction and abduction brace for 6 weeks. CONCLUSION: The short or midterm clinical and radiological results of cementless femoral revision using proximal modular stem for the hips with femoral osteolysis were satisfactoy. However it is believed that a longer follow-up is needed.