The Long-Term Results Of Cemented Curved-Stem Muller Prosthesis

Abstract

Between October 1984 - August 1992, 37 patients (41 hips) with degenerative arthritis of hip were treated by Müller curved-stem total hip-replacement arthroplasties. Of those, 27 patients (72.9%) were female, and 10 (27.1 %) were male. The age of patients ranged from 23 to 83, averaging 61 years old. Twenty five patients (30 hips) were evaluated. Follow up period ranged from 24 to 120, averaging 80 months. Mayo Clinic hip scores were used for evaluation of the patients. Twenty-three hips (76%) were classified excellent, 3 hips (10%) were classified good, and 4 hips (34%) were classified poor. Follow-up radiographs showed a 34 per cent (10 hips) incidence of aseptic loosening of the acetabular compenent and a 38 per cent (11 hips) incidence of aseptic loosening of the femoral compenent. Revision arthroplasty was performed in one hip. As conclusion, the survival of a total joint replacement is related to the stress distribution throughout the prosthesis, cement and bone. The stress distribution is related to a number of factors, including the design of the prosthesis.