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Orthopaedic Proceedings
Vol. 94-B, Issue SUPP_XXXVII | Pages 183 - 183
1 Sep 2012
Ruggieri P Pala E Henderson E Funovics P Hornicek F Windhager R Temple T Letson D Mercuri M
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Introduction

The current investigation includes a retrospective review of the experience of five Institutions with distal femur megaprostheses for tumor over a twenty year period, to analyze the incidence and etiology of failure, using a new classification system based upon the failure modes.

Methods

Between 1974 and 2008, 2174 patients underwent primary limb preservation for a benign or malignant extremity tumor using a metallic megaprosthesis at five Institutions, 951 (43.7%) were distal femur replacements. Retrospective analysis of complications according to the Letson and Ruggieri Classification was performed and Kaplan-Meier curves of implant survival were defined.

Segmental megaprosthetic reconstruction failures were categorized as mechanical and non-mechanical failures.