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  • Title: A biomechanical comparison of periprosthetic femoral fracture fixation in normal and osteoporotic cadaveric bone.
    Author: Demos HA, Briones MS, White PH, Hogan KA, Barfield WR.
    Journal: J Arthroplasty; 2012 May; 27(5):783-8. PubMed ID: 22014657.
    Abstract:
    Several techniques are described for fixation of Vancouver B1 femoral shaft fractures after total hip arthroplasty. Twenty-four femurs were scanned by dual x-ray absorptiometry scanned and matched for bone mineral density. Femurs were implanted with a cemented simulated total hip prosthesis with a simulated periprosthetic femur fracture distal to the stem. Fractures were fixed with Synthes (Paoli, Pa) 12-hole curved plates and 4 different constructs proximally. Each construct was loaded to failure in axial compression. Constructs with locking and nonlocking screws demonstrated equivalent loads at failure and were superior in load at failure compared with cables. Cable constructs failed proximally. No proximal failures occurred in specimens fixed with screws and cables. A combination of locked or nonlocked screws and supplemental cable fixation is recommended for the treatment of Vancouver B1 periprosthetic femur fractures.
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