Skip to main content

ORIGINAL RESEARCH article

Front. Bioeng. Biotechnol.
Sec. Biomechanics
Volume 13 - 2025 | doi: 10.3389/fbioe.2025.1493555
This article is part of the Research Topic Biomechanics in Orthopaedic Diseases and Surgery, Volume II View all 8 articles

Computational Evaluation of the Biomechanical Effects of Position Changes in the Femoral Neck System on Pauwels type III Femoral Neck Fractures: An In-silico Study

Provisionally accepted
Xiang Zhang Xiang Zhang 1Shenghang Zhang Shenghang Zhang 2Zhou Zhong Zhou Zhong 1Zhongwei Xiong Zhongwei Xiong 3*
  • 1 West China Hospital, Sichuan University, Chengdu, Sichuan Province, China
  • 2 Southwest Medical University, Luzhou, Sichuan, China
  • 3 Longmatan People's Hospital, Luzhou, Sichuan Province, China

The final, formatted version of the article will be published soon.

    Despite the biomechanical advantages of the Femoral Neck System (FNS), improvedimprovements in postoperative complication rates have not been significant. This study evaluated the effecteffects of different FNS positions on the biomechanical stability of the Pauwels type III femoral neck fractures (FNFs) fracture (FNF) using finite element analysis (FEA). The Pauwels type III FNF models fixed with different FNS positions were constructed based on using various different bolt lengths, bolt positions, and axis--bolt angles. Biomechanical parameters such as , including stiffness, the maximum implant Von-von Mises stress (MIVS), the maximum interfragmentary shear stress (MISS), and the maximum interfragmentary gap (MIG), were analyzed by simulating early postoperative weight-bearing. Entropy scoring was used to rank the performance of different fixation positions to determine the optimal FNS implantation position. TheCompared with that of the standard model, the biomechanical stability changed when FNS positioning was altered compared to the standard model. Among all the evaluated parameters, MIG had the highest weight (60.04%). In the lateral view, fracture fixation was most stable when the bolt was rotated 5° anteriorly relative to the femoral neck axis (composite score = 0.87). However, stability was poorer when the bolt was rotated 9° inward relative to the femoral neck axis (composite score = 0.13). The MIG is an important biomechanical parameter for assessing the stability of different FNS positions when treating FNFs. Shortening the distance between the bolt and the subchondral bone, upward movement, external rotation, and anterior rotation of the bolt can help to improve the stability of the FNS for treatingin the treatment of Pauwels III FNFs.

    Keywords: Femoral Neck Fractures, Femoral Neck System, Implant positioning, Biomechanics, Finite Element Analysis

    Received: 09 Sep 2024; Accepted: 03 Feb 2025.

    Copyright: © 2025 Zhang, Zhang, Zhong and Xiong. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

    * Correspondence: Zhongwei Xiong, Longmatan People's Hospital, Luzhou, Sichuan Province, China

    Disclaimer: All claims expressed in this article are solely those of the authors and do not necessarily represent those of their affiliated organizations, or those of the publisher, the editors and the reviewers. Any product that may be evaluated in this article or claim that may be made by its manufacturer is not guaranteed or endorsed by the publisher.