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Total hip replacement after failed hemiarthroplasty or mould arthroplasty. Comparison of results with those of primary replacements

1991; British Editorial Society of Bone & Joint Surgery; Volume: 73-B; Issue: 6 Linguagem: Inglês

10.1302/0301-620x.73b6.1955433

2044-5377

Adolfo Llinás, Augusto Sarmiento, Edward Ebramzadeh, WJ Gogan, HA McKellop,

Orthopedic Infections and Treatments

We compared the radiographic results of secondary total hip replacements, 99 following failed uncemented hemiarthroplasties and 21 following failed mould arthroplasties, with those of 825 primary cemented total hip replacements. The probability of occurrence of a number of radiological changes over time was calculated using survival analysis. The mean follow-up was 7.6 years (range one month to 20 years). The performance of the secondary total hip replacements varied with the preceding implant and was different for acetabular and femoral components. The incidence of radiological loosening was higher for femoral components implanted after failed hemiarthroplasties and for acetabular components after failed mould arthroplasties. However, the incidence of continuous radiolucent lines was lower for the acetabular components of converted hemiarthroplasties than for the primary replacements.