The Exeter femoral stem continues to migrate during its first decade after implantation
DOI:
https://doi.org/10.3109/17453674.2012.672093Abstract
Background Due to its collarless, double-tapered polished design, the Exeter femoral stem is known to migrate distally in the first 5 years after implantation. However, its long-term migration pattern has not been investigated.Patients and methods 39 consecutive patients (41 total hip arthroplasties) received a cemented Exeter stem and had prospective clinical and RSA follow-up. Patients were evaluated postoperatively at 6, 12, 26, and 52 weeks, and annually thereafter. Short-term results have been reported. In this study, the mean length of follow-up was 9.4 years (SD 3.2 years). No patients were lost to follow-up. 15 patients died during follow-up.Results No stems were revised. In 4 stems, fractures of the cement mantle were noted within the first 3 postoperative years. In 3 stems, this resulted in a complete circumferential cement mantle discontinuity. For the 37 well-performing stems, continuous but small migration was measured between 2 and 12 years of follow-up. Continued subsidence of 0.08 mm/year (95% CI: 0.05–0.12, p Interpretation The Exeter femoral stem continues to migrate during the first decade after implantation. Absolute stability is not required for good long-term survival if this is compatible with the design of the implant.Downloads
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Published
2012-04-01
How to Cite
Nieuwenhuijse, M. J., Valstar, E. R., Kaptein, B. L., & Nelissen, R. G. H. H. (2012). The Exeter femoral stem continues to migrate during its first decade after implantation. Acta Orthopaedica, 83(2), 129–134. https://doi.org/10.3109/17453674.2012.672093
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