Comparison between Total Hip Replacement and Bipolar Hip Replacement

Abstract

Purpose: A prospective, randomized study was performed to compare the clinical and functional outcomes at 5–15 years of follow-up in two groups of patients treated with either bipolar hip replacement or total hip replacement (THR). Materials and Methods: A total of 509 patients with either femoral neck fractures, degenerative arthritis, systemic arthritic diseases, avascular necrosis of the femoral head or pathologic fractures underwent surgery between May 2000 and June 2012. At follow-up, Harris hip scores, ambulation, complications, failure of implants and revision were analyzed to compare the two techniques. There was no significant difference between the two groups in terms of hip scores and ambulation. Rates of revision and mortality, complications and failure of implants, however, were lower in the bipolar endoprosthesis group than in the THR group. Conclusions: Hemi-arthroplasty by bipolar endoprosthesis is effective in patients with femoral neck fractures who have mild degenerative arthritis and pathologic fractures, while THR in cases with acetabular damage, systemic arthritic diseases and severe degenerative arthritis. In cases with mild degenerative arthritis, bipolar replacement is found to be better than THR.

Keywords: replacement, hip, implant, arthroplasty

Cite this Article

Mun-Sik Ko, Song-Chol Pak, Hyo Sim, Gwang-Rim Choe. Comparison Between Total Hip Replacement and Bipolar Hip Replacement. Research & Reviews: Journal of Surgery. 2019; 8(2): 12–17p