Supplemental medial small fragment fixation adds stability to distal femur fixation: A biomechanical study
Injury May 06, 2021
Goodnough LH, Salazar BP, Chen MJ, et al. - This study was attempted to correlate dual plating to lateral locked bridge plating alone in a cadaveric distal femur gap osteotomy model. In eight matched pairs of cadaveric female distal femurs (average age: 64 yrs (standard deviation ± 4.4 yrs); age range: 57 - 68 yrs;), Gap osteotomies were created to simulate comminuted extra-articular distal femur fractures (AO/OTA 33A). The findings illustrate that contemporary fixation methods with distal femur fractures are susceptible to mechanical failure and nonunion with lateral plates alone. Compared with lateral plating alone, dual plate fixation in a cadaveric model of distal femur fractures had undergone significantly less displacement under simulated weight-bearing conditions and demonstrated greater stiffness. According to the findings, given the significant clinical failure rates of lateral bridge plating in distal femur fractures, supplemental fixation should be considered, and dual plating of distal femurs augments mechanical stability in a clinically relevant magnitude.
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