Retrospective Study
Copyright ©The Author(s) 2022. Published by Baishideng Publishing Group Inc. All rights reserved.
World J Clin Cases. Aug 16, 2022; 10(23): 8107-8114
Published online Aug 16, 2022. doi: 10.12998/wjcc.v10.i23.8107
Different squatting positions after total knee arthroplasty: A retrospective study
Tie-Jian Li, Jing-Yang Sun, Yin-Qiao Du, Jun-Min Shen, Bo-Han Zhang, Yong-Gang Zhou
Tie-Jian Li, Jing-Yang Sun, Yin-Qiao Du, Jun-Min Shen, Bo-Han Zhang, Yong-Gang Zhou, Department of Orthopedics, The First Medical Center of PLA General Hospital, Beijing 100048, China
Author contributions: Li TJ and Sun JY contributed equally to this article; Li TJ and Sun JY designed and performed the research and wrote the paper; Zhou YG designed the research and supervised the report; Du YQ designed the research and contributed to the analysis; Shen JM provided clinical advice.
Institutional review board statement: The study was reviewed and approved by the General Hospital of Chinese People’s Liberation Army Institutional Review Board, No. S2017-099-01.
Informed consent statement: All study participants or their legal guardian provided informed written consent about personal and medical data collection prior to study enrolment.
Conflict-of-interest statement: All the authors report no relevant conflicts of interest for this article.
Data sharing statement: Technical appendix, statistical code, and dataset available from the corresponding author at ygzhou301@163.com. Participants gave informed consent for data sharing.
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: Yong-Gang Zhou, PhD, Chief Physician, Department of Orthopedics, The First Medical Center of PLA General Hospital, No. 28 Fuxing Road, Haidian District, Beijing 100048, China. ygzhou301@163.com
Received: November 29, 2021
Peer-review started: November 29, 2021
First decision: May 11, 2022
Revised: May 20, 2022
Accepted: July 11, 2022
Article in press: July 11, 2022
Published online: August 16, 2022
Core Tip

Core Tip: Few studies have focused on squatting ability after total knee arthroplasty (TKA). Most squatting-related items in patient-reported outcome measures present as binary options of “can” or “cannot” or a subjective sense of difficulty along with this motion. The main finding of this study is the squatting position classification based on squatting depth. And our squatting position classification offers a pragmatic approach to evaluating patients’ squatting ability after TKA.