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©The Author(s) 2022. Published by Baishideng Publishing Group Inc. All rights reserved.
World J Clin Cases. Jul 6, 2022; 10(19): 6406-6416
Published online Jul 6, 2022. doi: 10.12998/wjcc.v10.i19.6406
Published online Jul 6, 2022. doi: 10.12998/wjcc.v10.i19.6406
Total knee arthroplasty in Ranawat II valgus deformity with enlarged femoral valgus cut angle: A new technique to achieve balanced gap
Shuai-Jie Lv, Jie-Feng Huang, Qiang Mao, Bang-Jian He, Pei-Jian Tong, Department of Orthopedics and Traumatology, The First Affiliated Hospital and First Clinical College of Zhejiang Chinese Medical University, Hangzhou 310006, Zhejiang Province, China
Xiao-Jian Wang, The First Clinical Medical School, Zhejiang Chinese Medical University, Hangzhou 310053, Zhejiang Province, China
Author contributions: Tong PJ and Lv SJ conceived and coordinated the study, designed, performed, and analyzed the experiments, and wrote the paper; He BJ and Lv SJ carried out the data collection and analysis, and revised the paper; all authors reviewed the results and approved the final version of the manuscript.
Supported by the Project of Excellent Young Talents of Traditional Chinese Medicine of Zhejiang Province , No. 2019ZQ016 ; and the Zhejiang Medical and Health Science and Technology Young Talents Program , No. 2019RC059 .
Institutional review board statement: This study was approved by the hospital ethics and review committee of the First Affiliated Hospital of Zhejiang Chinese Medical University (No. 2019-K-207-01).
Informed consent statement: All patients provided informed consent for this study.
Conflict-of-interest statement: We have no financial relationships to disclose.
Data sharing statement: No additional data are available.
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: http://creativecommons.org/Licenses/by-nc/4.0/
Corresponding author: Pei-Jian Tong, MD, Chief Doctor, Department of Orthopedics and Traumatology, The First Affiliated Hospital and First Clinical College of Zhejiang Chinese Medical University, No. 54 Youdian Road, Shangcheng District, Hangzhou 310006, Zhejiang Province, China. 351653161@qq.com
Received: July 23, 2021
Peer-review started: July 23, 2021
First decision: September 2, 2021
Revised: September 10, 2021
Accepted: April 21, 2022
Article in press: April 21, 2022
Published online: July 6, 2022
Peer-review started: July 23, 2021
First decision: September 2, 2021
Revised: September 10, 2021
Accepted: April 21, 2022
Article in press: April 21, 2022
Published online: July 6, 2022
Core Tip
Core Tip: This study aimed to provide a new theory of surgical resection, soft tissue release, and femorotibial mechanical axis (FTMA) for Ranawat type-II valgus deformity (VD) of the knee using bone and soft tissue co-balance theory to reduce the complexity of the surgery and to improve postoperative outcomes. Bone and soft tissue balance is equally important in a total knee arthroplasty procedure. Adopting 5°-7° valgus cut angle for VD and sacrificing 2° neutral FTMA for severe VD during surgery can reduce the need for soft tissue release, maintain joint stability, and abrogate the use of constrained prostheses while minimizing postoperative complications.