Progress in prevention and treatment of knee laxity after posterior cruciate ligament reconstruction.
10.7507/1002-1892.202505021
- Author:
Zhaohui RUAN
1
;
Zhengliang SHI
1
;
Ping YUAN
1
;
Xianguang YANG
1
;
Yanlin LI
1
Author Information
1. Department of Sports Medicine, the First Affiliated Hospital of Kunming Medical University, Kunming Yunnan, 650032, P. R. China.
- Publication Type:English Abstract
- Keywords:
Posterior cruciate ligament reconstruction;
biomechanics;
knee laxity;
postoperative rehabilitation
- MeSH:
Humans;
Joint Instability/surgery*;
Posterior Cruciate Ligament Reconstruction/adverse effects*;
Posterior Cruciate Ligament/surgery*;
Knee Joint/physiopathology*;
Biomechanical Phenomena;
Range of Motion, Articular;
Postoperative Complications/prevention & control*;
Knee Injuries/surgery*
- From:
Chinese Journal of Reparative and Reconstructive Surgery
2025;39(10):1333-1341
- CountryChina
- Language:Chinese
-
Abstract:
OBJECTIVE:To summarize the research progress on knee laxity of biomechanics and prevention and treatment after posterior cruciate ligament (PCL) reconstruction.
METHODS:The domestic and international literature on the prevention and treatment of knee laxity after PCL reconstruction in recent years was extensively reviewed and analyzed.
RESULTS:Different degrees of knee laxity often occur after PCL reconstruction, which can lead to poor prognosis in patients. The causes are associated with a variety of factors, including abnormal graft remodeling (such as differences in healing time and biomechanics among different types of grafts), tunnel position deviation (such as graft wear caused by the "killer turn" effect), and mechanical factors in postoperative rehabilitation (such as improper early weight-bearing and range of motion). These factors may promote graft elongation, increase early posterior tibial translation, and thereby induce knee laxity.
CONCLUSION:While PCL reconstruction improves knee stability, it is crucial to focus on and prevent postoperative knee laxity. However, current surgical methods are limited by factors such as graft characteristics, surgical technique flaws, and rehabilitation protocols, and thus can not fully correct the issue of abnormal postoperative laxity. Surgical techniques and treatment strategies still need further improvement and optimization to enhance patients' postoperative outcomes and quality of life.
