Clinical and Translational Research
Copyright ©The Author(s) 2023. Published by Baishideng Publishing Group Inc. All rights reserved.
World J Clin Cases. Jul 16, 2023; 11(20): 4814-4823
Published online Jul 16, 2023. doi: 10.12998/wjcc.v11.i20.4814
Mechanical analysis of the femoral neck dynamic intersection system with different nail angles and clinical applications
Ying Wang, Jian-Xiong Ma, Hao-Hao Bai, Bin Lu, Lei Sun, Hong-Zhen Jin, Xin-Long Ma
Ying Wang, Jian-Xiong Ma, Hao-Hao Bai, Bin Lu, Lei Sun, Hong-Zhen Jin, Xin-Long Ma, Orthopaedics Institute, Tianjin Hospital, Tianjin University, Tianjin 300050, China
Author contributions: Wang Y, Ma JX and Bai HH contributed equally to this work; Wang Y, Ma JX, and Ma XL conceived the theme of study and drafted the manuscript; Wang Y and Bai HH recruited volunteers and collected CT data; Lu B and Sun L conducted three-dimensional model modeling and preprocessing; Jin HZ and Wang Y conducted finite element modeling and analysis; All authors have read and approved the final manuscript.
Supported by Tianjin Science and Technology planning Project, No. 21JCQNJC01060; Key Project of Tianjin Natural Science Foundation, No. 22JCZDJC00340; and National Key Research and Development Project of China, No. 2022YFC3601904.
Institutional review board statement: The study was reviewed and approved by the Tianjin Hospital ethics committee [Approval NO.2023.023].
Conflict-of-interest statement: All authors declare that they have no conflict of interest.
Data sharing statement: The datasets are available from the corresponding author at maxinlong@126.com.
Open-Access: This article is an open-access article that was selected by an in-house editor and fully peer-reviewed by external reviewers. It is distributed in accordance with the Creative Commons Attribution NonCommercial (CC BY-NC 4.0) license, which permits others to distribute, remix, adapt, build upon this work non-commercially, and license their derivative works on different terms, provided the original work is properly cited and the use is non-commercial. See: https://creativecommons.org/Licenses/by-nc/4.0/
Corresponding author: Xin-Long Ma, MD, Professor, Orthopaedics Institute, Tianjin Hospital, Tianjin University, Heping District Munan Road No. 155 Tianjin 300050, China. maxinlong@126.com
Received: May 11, 2023
Peer-review started: May 11, 2023
First decision: May 31, 2023
Revised: June 7, 2023
Accepted: June 25, 2023
Article in press: June 25, 2023
Published online: July 16, 2023
Processing time: 62 Days and 1 Hours
Core Tip

Core Tip: Current studies have confirmed that the structural design of the femoral neck dynamic intersection system (FNS) has good biomechanical properties in European and American populations. However, no relevant research report currently addresses the suitability of the 130° staple design of FNS for Asian populations. Herein, we compared the biomechanical stability differences in various FNS main nail angles for treating femoral neck fractures in Asian populations. We found that, in Asian populations, a main nail FNS angle of 130° has the best stability for treating femoral neck fractures with quantifiable stress distribution and minimal proximal femoral displacement.