Fixation of periprosthetic femur fractures: a biomechanical analysis comparing cortical strut allograft plates and conventional metal plates.
This study compared the stability of periprosthetic femur fractures fixed using cortical allograft struts with a metal plate. Cadaveric specimens were loaded in single-leg stance and stair climbiing to 2250 N. Optimum stability in single-leg stance was achieved with two long struts medially and laterally. No clear advantage was noted in using a second strut in stair climbing. Cables rather than wires were useful in single-leg stance, but not in stair climbing. Allograft cortical struts are a biomechanically sound alternative to metal plates fixed with screws and cables for femur fracture fixation below a well-fixed femoral component.
Peters
Christopher L
CL
Department of Orthopedics, University of Utah School of Medicine, Salt Lake City, Utah 84132, USA.
Bachus
Kent N
KN
Davitt
James S
JS
D001696:Biomechanical Phenomena; D001860:Bone Plates; D016025:Bone Transplantation / Q000379:methods*; D002102:Cadaver; D005264:Femoral Fractures / Q000209:etiology / Q000601:surgery*; D005593:Fracture Fixation, Internal / Q000295:instrumentation / Q000379:methods*; D006622:Hip Prosthesis / Q000009:adverse effects*; D006801:Humans; D008670:Metals; D012680:Sensitivity and Specificity; D013314:Stress, Mechanical; D013718:Tensile Strength; D014184:Transplantation, Homologous
D008670:Metals