Biomechanical Evaluation of Periprosthetic Femoral Fracture Fixation

• DOI: 10.2106/jbjs.f.01561
• Publication Date: 2008-05-02T01:53:08Z
• Authors: Rad Zdero; Richard Walker; James P. Waddell; Emil H. Schemitsch
• Keywords: Biomechanics; Dynamic compression plate

Background: A variety of methods are available for the fixation femoral shaft fractures after total hip arthroplasty. However, few studies in literature have quantified performance such repair constructs. The aim this study was to evaluate biomechanically four different constructs periprosthetic following Methods: Twenty synthetic femora were tested axial compression, lateral bending, and torsion determine initial stiffness, as well stiffness a simulated midshaft fracture with without bone gap. Four (five specimens per group) assessed: construct Synthes locked plate (a twelve-hole broad dynamic compression plate) screws; B, cables C, Zimmer nonlocking (eight-hole) cable nonlocked D, allograft strut, cables, screws. Axial bending torsional assessed respect baseline intact specimen values. load failure also measured specimens. Results: Construct D demonstrated either equivalent or superior all testing modes compared other both comparison A, C test (with one exception) Conclusions: combination an strut (construct D) resulted highest examined treating around stable component replacement. Clinical Relevance: (constructs B) should be used caution stand-alone treatment arthroplasty, particularly good stock.