Long Ting, Fernandez Justin, Liu Hui, Li Hanjun
Auckland Bioengineering Institute, University of Auckland, Auckland, New Zealand.
Biomechanics Laboratory, Beijing Sport University, Beijing, China.
Front Physiol. 2023 Apr 21;14:1160261. doi: 10.3389/fphys.2023.1160261. eCollection 2023.
Anterior cruciate ligament reconstruction (ACLR) cannot decrease the risk of knee osteoarthritis after anterior cruciate ligament rupture, and tibial contact force is associated with the development of knee osteoarthritis. The purpose of this study was to compare the difference in bilateral tibial contact force for patients with unilateral ACLR during walking and jogging based on an EMG-assisted method in order to evaluate the risk of knee osteoarthritis following unilateral ACLR. Seven unilateral ACLR patients participated in experiments. The 14-camera motion capture system, 3-Dimension force plate, and wireless EMG test system were used to collect the participants' kinematics, kinetics, and EMG data during walking and jogging. A personalized neuromusculoskeletal model was established by combining scaling and calibration optimization. The inverse kinematics and inverse dynamics algorithms were used to calculate the joint angle and joint net moment. The EMG-assisted model was used to calculate the muscle force. On this basis, the contact force of the knee joint was analyzed, and the tibial contact force was obtained. The paired sample -test was used to analyze the difference between the participants' healthy and surgical sides of the participants. During jogging, the peak tibial compression force on the healthy side was higher than on the surgical side ( = 0.039). At the peak moment of tibial compression force, the muscle force of the rectus femoris ( = 0.035) and vastus medialis ( = 0.036) on the healthy side was significantly higher than that on the surgical side; the knee flexion ( = 0.042) and ankle dorsiflexion ( = 0.046) angle on the healthy side was higher than that on the surgical side. There was no significant difference in the first ( = 0.122) and second ( = 0.445) peak tibial compression forces during walking between the healthy and surgical sides. Patients with unilateral ACLR showed smaller tibial compression force on the surgical side than on the healthy side during jogging. The main reason for this may be the insufficient exertion of the rectus femoris and vastus medialis.
前交叉韧带重建术（ACLR）并不能降低前交叉韧带断裂后膝关节骨关节炎的风险，并且胫骨接触力与膝关节骨关节炎的发展相关。本研究的目的是基于肌电图辅助方法比较单侧ACLR患者在行走和慢跑过程中双侧胫骨接触力的差异，以评估单侧ACLR后膝关节骨关节炎的风险。七名单侧ACLR患者参与了实验。使用14台摄像机的运动捕捉系统、三维测力板和无线肌电图测试系统在行走和慢跑过程中收集参与者的运动学、动力学和肌电图数据。通过结合缩放和校准优化建立个性化的神经肌肉骨骼模型。使用逆运动学和逆动力学算法计算关节角度和关节净力矩。使用肌电图辅助模型计算肌肉力量。在此基础上，分析膝关节的接触力，得出胫骨接触力。采用配对样本检验分析参与者健康侧和手术侧之间的差异。在慢跑过程中，健康侧的胫骨峰值压缩力高于手术侧（P = 0.039）。在胫骨压缩力峰值时刻，健康侧股直肌（P = 0.035）和股内侧肌（P = 0.036）的肌肉力量明显高于手术侧；健康侧的膝关节屈曲（P = 0.042）和踝关节背屈（P = 0.046）角度高于手术侧。在行走过程中，健康侧和手术侧的第一（P = 0.122）和第二（P = 0.445）峰值胫骨压缩力没有显著差异。单侧ACLR患者在慢跑过程中手术侧的胫骨压缩力小于健康侧。造成这种情况的主要原因可能是股直肌和股内侧肌用力不足。
