Retrospective Study
Copyright ©The Author(s) 2019. Published by Baishideng Publishing Group Inc. All rights reserved.
World J Clin Cases. Dec 26, 2019; 7(24): 4208-4217
Published online Dec 26, 2019. doi: 10.12998/wjcc.v7.i24.4208
Intact, pie-crusting and repairing the posterior cruciate ligament in posterior cruciate ligament-retaining total knee arthroplasty: A 5-year follow-up
De-Si Ma, Liang Wen, Zhi-Wei Wang, Bo Zhang, Shi-Xiang Ren, Yuan Lin
De-Si Ma, Liang Wen, Zhi-Wei Wang, Bo Zhang, Shi-Xiang Ren, Yuan Lin, Department of Orthopedics, Beijing Chaoyang Hospital, Capital Medical University, Beijing 100020, China
Author contributions: Ma DS analyzed the data and wrote the first draft of the manuscript; Wen L designed the research and provided guidance for the study; Wang ZW, Ren SX and Zhang B contributed to the acquisition of data and interpretation of data. Yuan Lin performed the surgeries.
Institutional review board statement: The study was reviewed and approved by the Ethics Committee of Beijing Chaoyang Hospital, Capital Medical University (No. 12-70).
Informed consent statement: All study participants provided informed written consent prior to study enrollment.
Conflict-of-interest statement: The authors declare no conflict of interest.
Data sharing statement: Technical appendix, statistical code, and dataset available from the corresponding author. No additional data are available.
Open-Access: This article is an open-access article which was selected by an in-house editor and fully peer-reviewed by external reviewers. It is distributed in accordance with the Creative Commons Attribution Non Commercial (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: Liang Wen, MD, PhD, Associate Chief Physician, Doctor, Department of Orthopedics, Beijing Chaoyang Hospital, Capital Medical University, No 8 Gongren Tiyuchang Nanlu, Chaoyang District, Beijing 100020, China. wenliang@ccmu.edu.cn
Telephone: +86-10-85231228
Received: September 29, 2019
Peer-review started: September 29, 2019
First decision: November 21, 2019
Revised: November 25, 2019
Accepted: November 30, 2019
Article in press: November 30, 2019
Published online: December 26, 2019
Processing time: 87 Days and 1.9 Hours
Core Tip

Core tip: The number of cruciate-retaining total knee arthroplasty (CR-TKA) is increasing. Whether the entire posterior cruciate ligament (PCL) should be retained during CR-TKA is controversial. The PCL protector can effectively protect the PCL bone block. Application of the PCL protector is described in this study, and the methods used to balance the tension of the PCL (pie-crusting and repairing) are reported. The strategy for a tight PCL in CR-TKA is summarized. The clinical outcomes are evaluated by range of motion and Knee Society Clinical Rating system scores.