Fatigue failure of the sliding hip screw – clinical and biomechanical analysis

Libor Necas, Maros Hrubina, Zoltan Cibula, Jiri Behounek, Stanislav Krivanek and Zdenek Horak

Computer Methods in Biomechanics and Biomedical Engineering, 2017, vol. 20, issue 12, 1364-1372

Abstract: The study was aimed at the clinical and biomechanical analyses of the sliding hip screw breakage with the use of finite element method. We have identified two patients with the sliding screw breakage. In the first patient, the biomechanical analysis revealed the reduced stress values σHMH not exceeding the yield limit or strength limit of the implant. The yield limit was exceeded in second one. Clinical and biomechanical analyses have demonstrated that adherence to technical requirements of the appropriate osteosynthesis implementation is the principal condition of timely healing since it prevents the material failure.

Date: 2017
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DOI: 10.1080/10255842.2017.1363192

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