Biomechanical effects of screws of different materials on vertebra-pediculoplasty: a finite element study

Yan-Ni Wang; Ya-Nan Ren; Ya-Nan Ren; Jun Han; Chao Chen; Xun Sun; Ming-Yuan Di; Yi-Ming Dou; Xin-Long Ma; Zheng Wang; Cheng-Fei Du; Cheng-Fei Du; Qiang Yang

doi:10.3389/fbioe.2023.1225925

Frontiers in Bioengineering and Biotechnology (Jun 2023)

Biomechanical effects of screws of different materials on vertebra-pediculoplasty: a finite element study

Yan-Ni Wang,
Ya-Nan Ren,
Ya-Nan Ren,
Jun Han,
Chao Chen,
Xun Sun,
Ming-Yuan Di,
Yi-Ming Dou,
Xin-Long Ma,
Zheng Wang,
Cheng-Fei Du,
Cheng-Fei Du,
Qiang Yang

Affiliations

Yan-Ni Wang: Department of Spine Surgery, Tianjin Hospital, Tianjin University, Tianjin, China
Ya-Nan Ren: Tianjin Key Laboratory for Advanced Mechatronic System Design and Intelligent Control, School of Mechanical Engineering, Tianjin University of Technology, Tianjin, China
Ya-Nan Ren: National Demonstration Center for Experimental Mechanical and Electrical Engineering Education, Tianjin University of Technology, Tianjin, China
Jun Han: Department of Spine Surgery, Tianjin Hospital, Tianjin University, Tianjin, China
Chao Chen: Department of Spine Surgery, Tianjin Hospital, Tianjin University, Tianjin, China
Xun Sun: Department of Spine Surgery, Tianjin Hospital, Tianjin University, Tianjin, China
Ming-Yuan Di: Department of Spine Surgery, Tianjin Hospital, Tianjin University, Tianjin, China
Yi-Ming Dou: Department of Spine Surgery, Tianjin Hospital, Tianjin University, Tianjin, China
Xin-Long Ma: Department of Spine Surgery, Tianjin Hospital, Tianjin University, Tianjin, China
Zheng Wang: Department of Orthopaedics, Chinese People’s Liberation Army General Hospital, Beijing, China
Cheng-Fei Du: Tianjin Key Laboratory for Advanced Mechatronic System Design and Intelligent Control, School of Mechanical Engineering, Tianjin University of Technology, Tianjin, China
Cheng-Fei Du: National Demonstration Center for Experimental Mechanical and Electrical Engineering Education, Tianjin University of Technology, Tianjin, China
Qiang Yang: Department of Spine Surgery, Tianjin Hospital, Tianjin University, Tianjin, China

DOI: https://doi.org/10.3389/fbioe.2023.1225925
Journal volume & issue: Vol. 11

Abstract

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Background: The effects of cannulated screws made of polyetheretherketone (PEEK) on the biomechanical properties of the vertebral body during vertebra-pediculoplasty remain unclear. This study aimed to investigate whether PEEK screws have the potential to replace titanium alloy screws.Methods: The surgical model of two different materials of screws was constructed using the finite element method. The biomechanical effects of the two models on the vertebral body under different working conditions were compared.Results: ① The peak von Mises stress of PEEK screws was significantly lower than that of titanium screws, with a reduction ranging from 52% to 80%. ② The von Mises stress values for the injured T12 spine were similar for both materials. Additionally, the segmental range of motion and intervertebral disc pressure showed no significant difference between the two materials.Conclusion: PEEK screws demonstrated advantages over titanium screws and may serve as a viable alternative for screw materials in vertebra-pediculoplasty.

Published in Frontiers in Bioengineering and Biotechnology

ISSN: 2296-4185 (Online)
Publisher: Frontiers Media S.A.
Country of publisher: Switzerland
LCC subjects: Technology: Chemical technology: Biotechnology
Website: http://www.frontiersin.org/bioengineering_and_biotechnology

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