Title

Intraoperative Periprosthetic Femur Fracture: A Biomechanical Analysis of Cerclage Fixation.

Document Type

Article

Publication Date

8-1-2015

Publication Title

The Journal of arthroplasty

Abstract

Intraoperative periprosthetic femur fracture is a known complication of total hip arthroplasty (THA) and a variety of cerclage systems are available to manage these fractures. The purpose of this study was to examine the in situ biomechanical response of cerclage systems for fixation of periprosthetic femur fractures that occur during cementless THA. We compared cobalt chrome (CoCr) cables, synthetic cables, monofilament wires and hose clamps under axial compressive and torsional loading. Metallic constructs with a positive locking system performed the best, supporting the highest loads with minimal implant subsidence (both axial and angular) after loading. Overall, the CoCr cable and hose clamp had the highest construct stiffness and least reduction in stiffness with increased loading. They were not demonstrably different from each other.

Medical Subject Headings

Arthroplasty, Replacement, Hip; Biomechanical Phenomena; Bone Wires; Femoral Fractures; Femur; Hip Prosthesis; Intraoperative Complications; Models, Anatomic; Periprosthetic Fractures

PubMed ID

25765131

Volume

30

Issue

8

First Page

1449

Last Page

1457

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