A bending model for assessing relative stiffness and strength of orthopaedic fixation constructs.

Autor: Abar B; Duke University, Department of Mechanical Engineering and Material Sciences, USA; Duke University, Department of Orthopaedic Surgery, USA., Vail E; Duke University, Department of Mechanical Engineering and Material Sciences, USA., Mathey E; University of Colorado Denver, Department of Mechanical Engineering, USA., Park E; Duke University, Department of Mechanical Engineering and Material Sciences, USA., Allen NB; Duke University, Department of Orthopaedic Surgery, USA., Adams SB; Duke University, Department of Orthopaedic Surgery, USA., Gall K; Duke University, Department of Mechanical Engineering and Material Sciences, USA. Electronic address: kag70@duke.edu.
Jazyk: angličtina
Zdroj: Clinical biomechanics (Bristol, Avon) [Clin Biomech (Bristol, Avon)] 2024 Jan; Vol. 111, pp. 106135. Date of Electronic Publication: 2023 Oct 29.
DOI: 10.1016/j.clinbiomech.2023.106135
Abstrakt: Background: The purpose of this study is to develop a simple and reproducible bending model that is compatible with a wide range of orthopaedic fixation devices and 3D printed spacers.
Methods: A robust 4-point bending model was constructed by securing sawbones blocks with different orthopaedic fixation device constructs. Stress strain curves derived from a fundamental mechanics model were used to assess the effect of bone density, type of hardware (staple vs intramedullary beam), the use of dynamic compression, orientation of staples (dorsal vs plantar), and the use of 3D printed titanium spacers.
Findings: The high throughput 4-point bending model is simple enough that the methods can be easily repeated to assess a wide range of fixation methods, while complex enough to provide clinically relevant information.
Interpretations: It is recommended that this model is used to assess a large initial set of fixation methods in direct and straightforward comparisons.
Competing Interests: Declaration of Competing Interest SA had done consulting work for Enovis who manufactures the devices used in this manuscript. The authors declare the following financial interests/personal relationships which may be considered as potential competing interests: Samule Adams reports a relationship with Envois that includes: consulting or advisory.
(Copyright © 2023 Elsevier Ltd. All rights reserved.)
Databáze: MEDLINE
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