Abstract
Femoral stem revision surgery with proximal bone loss may be treated with modular uncemented distal fixation stems. Early results of the ZMR tapered stems with relatively fewer cases were encouraging. In this prospective study, we evaluated the 2 to 10 years survivorship, associated complications and functional outcomes of 84 cases of femoral revision using the ZMR tapered stem. The indications for revision were aseptic loosening (50), periprosthetic fracture (12), infection (17), stem fracture (4) and instability (1). The mean follow-up was 46 months (range, 25-117). The Kaplan-Meier survival with femoral re-revision for any reason as an end-point was 92.7% (95% CI: 87.7%-97.7%). The mean Harris hip score improved from 37 (10-77) points before operation to 72 (41-96) points at last follow-up. The ZMR tapered stem has shown satisfactory results in 2 to 10 years followup in various femoral stem revision conditions.
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