• J Arthroplasty · Oct 2013

    The effect of fracture stability on the performance of locking plate fixation in periprosthetic femoral fractures.

    • Mehran Moazen, Jonathan H Mak, Lee W Etchels, Zhongmin Jin, Ruth K Wilcox, Alison C Jones, and Eleftherios Tsiridis.
    • Institute of Medical and Biological Engineering, School of Mechanical Engineering, University of Leeds, Leeds LS2 9JT, UK; Medical and Biological Engineering, School of Engineering, University of Hull, Hull HU6 7RX, UK.
    • J Arthroplasty. 2013 Oct 1; 28 (9): 1589-95.

    AbstractPeriprosthetic femoral fracture (PFF) fixation failures are still occurring. The effect of fracture stability and loading on PFF fixation has not been investigated and this is crucial for optimum management of PFF. Models of stable and unstable PPFs were developed and used to quantify the effect of fracture stability and loading in a single locking plate fixation. Stress on the plate was higher in the unstable compared to the stable fixation. In the case of unstable fractures, it is possible for a single locking plate fixation to provide the required mechanical environment for callus formation without significant risk of plate fracture, provided partial weight bearing is followed. In cases where partial weight bearing is unlikely, additional biological fixation could be considered.Copyright © 2013 Elsevier Inc. All rights reserved.

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