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Biomechanical Evaluation Of Fracture Fixation Constructs Using A Variable-Angle Locked Periprosthetic Femur Plate System, Martin F. Hoffmann, Travis A. Burgers, James J. Mason, Bart O. Williams, Debra L. Sietsema

Mechanical Engineering Faculty Publications

Background
In the United States there are more than 230,000 total hip replacements annually, and periprosthetic femoral fractures occur in 0.1–4.5% of those patients. The majority of these fractures occur at the tip of the stem (Vancouver type B1). The purpose of this study was to compare the biomechanically stability and strength of three fixation constructs and identify the most desirable construct.
Methods
Fifteen medium adult synthetic femurs were implanted with a hip prosthesis and were osteotomized in an oblique plane at the level of the implant tip to simulate a Vancouver type B1 periprosthetic fracture. Fractures were fixed with …