Bipolar Hemiarthroplasty vs Total Arthroplasty of the Patients with Aseptic Necrosis of the Femoral Head - 20 year retrospective study

Abstract

We evaluated 1541 patients with aseptic necrosis of the femoral head who underwent prosthetic surgery over a period of 20 years and assessed each implant survival rate depending on the surgucal technique used. The patients were divided into two groups. The first group contained patients with stage II and III of aseptic necrosis, while the second group contained patients with coxarthrosis secondary to the aseptic necrosis of the femoral head. In 20 years, the revision of the bipolar prosthesis in patients with NACF stage III was rated at 1.65%, p=0.0005 and the total prosthesis was rated 7.41%, in patients with secondary NACF coxarthrosis, in spite of 3.98% which was in patients with NACF, p=0.002. The cotyloid was the most frequent cause for the bipolar prosthesis revision and the aseptic loosening of the cup was the most common cause for the total prosthesis revision in patients with secondary NACF coxarthrosis.