Hybrid triad provides fracture plane stability in a computational model of a Pauwels Type III hip fracture

M. Cordeiro, S. Caskey, C. Frank, S. Martin, A. Srivastava and T. Atkinson

Computer Methods in Biomechanics and Biomedical Engineering, 2020, vol. 23, issue 9, 476-483

Abstract: The study utilized finite element method to determine displacements and stresses in a set of Pauwels Type III femoral neck fractures repaired using 3 techniques (cannulated screws (Triad), sliding hip screw (SHS), and a Hybrid (SHS + cannulated screws). The research found that shear displacement doubled between the 65° and 75° fracture angles regardless of fixation construct. The SHS alone was the least stable construct, with highest construct stresses and shear displacement along the fracture plane. The stability of the Hybrid and Triad constructs were similar, but stress in the Hybrid was lower suggesting it would provide a higher load to failure than the Triad.

Date: 2020
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DOI: 10.1080/10255842.2020.1738404

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