Ren Shuang, Shi Huijuan, Liang Zixuan, Zhang Si, Hu Xiaoqing, Huang Hongshi, Ao Yingfang
Department of Sports Medicine, Peking University Third Hospital; Institute of Sports Medicine of Peking University; Beijing Key Laboratory of Sports Injuries; Engineering Research Center of Sports Trauma Treatment Technology and Devices, Ministry of Education, Beijing 100191, China.
Beijing Da Xue Xue Bao Yi Xue Ban. 2024 Oct 18;56(5):868-873. doi: 10.19723/j.issn.1671-167X.2024.05.018.
To evaluate knee biomechanics of patients about 12 months after anterior cruciate ligament (ACL) reconstruction during cutting and determine the abnormal biomechanical characteristics.
Sixteen males about 12 months after ACL reconstruction were recruited for this study. Three-dimensional kinematic and kinetic data were collected during cutting movement. Knee joint angles and moments were calculated. Paired -tests were used to compare the differences in knee biomechanics between the surgical leg and nonsurgical leg.
The peak posterior ground reaction force (surgical leg: 0.380±0.071; nonsurgical leg: 0.427±0.069, = 0.003) and vertical ground reaction force (surgical leg: 1.996±0.202, nonsurgical leg: 2.110±0.182, = 0.001) were significantly smaller in the surgical leg than in the nonsurgical leg. When compared with the uninjured leg, the surgical leg demonstrated a smaller knee flexion angle (surgical leg: 38.3°± 7.4°; nonsurgical leg: 42.8°± 7.9°, < 0.001) and larger external rotation angle (surgical leg: 10.3°± 2.4°; nonsurgical leg: 7.7°± 2.1°, = 0.008). The surgical leg also demonstrated a smaller peak knee extension moment (surgical leg: 0.092 ± 0.031; nonsurgical leg: 0.133 ± 0.024, < 0.001) and peak knee external rotation moment (surgical leg: 0.005 ± 0.004; nonsurgical leg: 0.008 ± 0.004, = 0.015) when compared with the nonsurgical leg.
The individuals with ACL reconstruction mainly showed asymmetrical movements in the sagittal and horizontal planes. The surgical leg demonstrated a smaller peak knee flexion angle, knee extension moment, and knee external rotation moment, with greater knee external rotation angle.
评估前交叉韧带（ACL）重建术后约12个月患者在切入动作时的膝关节生物力学，并确定异常的生物力学特征。
本研究招募了16名ACL重建术后约12个月的男性。在切入动作过程中收集三维运动学和动力学数据。计算膝关节角度和力矩。采用配对t检验比较手术侧与非手术侧膝关节生物力学的差异。
手术侧的峰值后向地面反作用力（手术侧：0.380±0.071；非手术侧：0.427±0.069，P = 0.003）和垂直地面反作用力（手术侧：1.996±0.202，非手术侧：2.110±0.182，P = 0.001）显著小于非手术侧。与未受伤侧相比，手术侧膝关节屈曲角度较小（手术侧：38.3°±7.4°；非手术侧：42.8°±7.9°，P<0.001），外旋角度较大（手术侧：10.3°±2.4°；非手术侧：7.7°±2.1°，P = 0.008）。与非手术侧相比，手术侧膝关节伸展力矩峰值（手术侧：0.092±0.031；非手术侧：0.133±0.024，P<0.001）和膝关节外旋力矩峰值也较小（手术侧：0.005±0.004；非手术侧：0.008±0.004，P = 0.015）。
ACL重建患者主要在矢状面和水平面表现出不对称运动。手术侧膝关节屈曲角度峰值、伸展力矩和外旋力矩较小，外旋角度较大。
