Stem fixation in the Charnley low-friction arthroplasty in young patients using an intramedullary bone block

The Journal of Bone and Joint Surgery. British Volume
B Michael WroblewskiPaul D Siney

Abstract

We report a prospective study of the use of intramedullary bone blocks to improve the fixation of a matt-finish femoral stem in Charnley low-friction arthroplasties. There were 379 patients (441 hips), but at a minimum follow-up of ten years there were 258 arthroplasties in 221 patients including some which had been revised. The mean age at surgery was 41 years (17 to 51) and the mean follow-up was 13.4 years (1 to 20 including the early revisions). Nine stems (3.5%) had been revised for aseptic loosening, but there were no stem fractures. Survivorship of stems was 99.2% at ten years and 94.35% at 15 and 20 years. We found that the patient's gender, the position of the stem and the experience of the surgeon all influenced the outcome. Our findings suggest that using our method of stem fixation, follow-up of over 11 years was needed to reveal the effects of endosteal cavitation of the femur, and of over 13 years to assess any divergence between the clinical and the radiological outcomes of stem fixation.

Citations

Mar 27, 2013·The Journal of Arthroplasty·Bodo PurbachB Michael Wroblewski
Nov 3, 2009·The Journal of Arthroplasty·Aaron J BucklandPeter F M Choong
Feb 15, 2001·The Journal of Arthroplasty·K Y ChiuD Yip
Nov 16, 2004·The Orthopedic Clinics of North America·B M WroblewskiPatricia A Fleming
Dec 9, 2000·The Journal of Arthroplasty·R L Barrack
Feb 22, 2012·Acta Biomaterialia·L Ma, W M Rainforth
Aug 11, 2007·The Journal of Arthroplasty·Kafai LaiDavid R Hedden
Oct 8, 1999·The Journal of Arthroplasty·W L Jaffe, C A Hawkins

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