A biomechanical evaluation of femoroplasty under simulated fall conditions.

Journal of Orthopaedic Trauma
Edward G SutterStephen M Belkoff

Abstract

To test the hypotheses that, compared with controls: 1) femoroplasty (the injection of bone cement into the proximal femur in an attempt to prevent fragility fracture) increases the yield and ultimate loads, yield and ultimate energies, and stiffness of the proximal osteoporotic femur in a simulated fall model; and 2) the manner in which the cement distributes in the proximal femur affects the extent to which those mechanical properties are altered. In 10 pairs of osteoporotic human cadaveric femora, we injected one femur of each pair with 40 to 50 mL of polymethylmethacrylate bone cement; the noninjected femur served as the control. The filling percentage was calculated in four anatomic regions of the femur: head, neck, trochanter, and subtrochanter. All specimens were biomechanically tested in a configuration that simulated a fall on the greater trochanter. Student t test, linear regression, and multinomial logistic regression statistical analyses were conducted where appropriate with significant difference defined as P < 0.05. Femoroplasty significantly increased yield load (22.0%), ultimate load (37.3%), yield energy (79.6%), and ultimate energy (154%) relative to matched controls but did not significantly change stiffness ...Continue Reading

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Citations

Aug 7, 2014·European Radiology·Roberto Luigi CazzatoJean Palussiere
Feb 5, 2013·Medical Engineering & Physics·Ehsan BasafaMehran Armand
Jan 11, 2016·Archives of Orthopaedic and Trauma Surgery·Christoph RaasWerner Schmoelz
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Mar 25, 2015·Cardiovascular and Interventional Radiology·Roberto Luigi CazzatoEzio Lanza
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Dec 4, 2014·Journal of Biomechanics·Ehsan BasafaMehran Armand
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Sep 1, 2010·Geriatric Orthopaedic Surgery & Rehabilitation·Edward G SutterStephen M Belkoff
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Jan 2, 2021·Journal of the Mechanical Behavior of Biomedical Materials·Samuel A HockettErin M Mannen
Mar 17, 2020·Journal of the Mechanical Behavior of Biomedical Materials·Amelie SasG Harry van Lenthe

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