Hybrid triad provides fracture plane stability in a computational model of a Pauwels Type III hip fracture. Issue 9 (3rd July 2020)

• Record Type: Journal Article
• Authors: Cordeiro, M.; Caskey, S.; Frank, C.; Martin, S.; Srivastava, A.; Atkinson, T.
• Is Part Of: Computer methods in biomechanics and biomedical engineering. Volume 23:Issue 9(2020)
• Page Start: 476
• Page End: 483
• Publication Date: 2020-07-03
• Subjects: Femoral neck fracture -- Pauwels III -- sliding hip screw -- dynamic hip screw -- inverted triad -- finite element model sawbones -- hip biomechanics; Biomechanics -- Data processing -- Periodicals; Biomedical engineering -- Periodicals; Biomechanics -- Periodicals; Biomedical Engineering -- methods -- Periodicals; Computing Methodologies -- Periodicals; 612.7
• DOI: 10.1080/10255842.2020.1738404
• Languages: English
• ISSNs: 1025-5842

Abstract

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.