Effects of ACL Reconstruction in the Dominant or Nondominant Limb on Lower Limb Function and Biomechanics During Single-Leg Jump Landing
10.16156/j.1004-7220.2025.04.020
- VernacularTitle:优势侧与非优势侧前交叉韧带重建对下肢功能及单脚跳跃落地动作生物力学特征的影响
- Author:
Boshi XUE
1
;
Xiaowei YANG
;
Xia WANG
;
Zhipeng ZHOU
;
Liangliang ZHENG
Author Information
1. 山东体育学院运动与健康学院,济南 250102
- Publication Type:Journal Article
- Keywords:
limb dominance;
anterior cruciate ligament reconstruction;
single-leg jump;
landing;
knee injury
- From:
Journal of Medical Biomechanics
2025;40(4):939-947
- CountryChina
- Language:Chinese
-
Abstract:
Objective To determine the effect of limb dominance on landing biomechanics and lower limb functional outcomes in patients with anterior cruciate ligament reconstruction(ACLR).Methods Forty-nine participants were recruited and divided into the ACLR on dominant limb(ACLR-D)group,ACLR on nondominant limb(ACLR-ND)group and healthy control group.Single-leg jump landing,knee isokinetic muscle strength,Y balance,and single-leg hop distance were tested on both limbs of all participants.Kinematics and kinetics data during the single-leg jump landing were collected by an infrared motion capture system and a force platform,and knee joint muscle strength was collected using the isokinetic muscle strength testing system.Two-way mixed-design ANOVAs were used to observe the effects of limb and group on the outcomes of each test.Results The non-surgical limbs had greater knee valgus,knee external rotation angles and knee valgus moments during single-leg jump landing in the ACLR-D group compared with those in the ACLR-ND group,and the ACLR-D group had significantly smaller bilateral knee flexion angles than the control group.There were no differences in knee muscle strength,Y-balance composite scores and single-leg hop distance between ACLR-D and ACLR-ND groups,but the Y balance scores in the ACLR-ND group were smaller than those in the control group.Conclusions Limb dominance has no effects on knee muscle strength,dynamic postural control,and single-leg hop function in ACLR patients.The non-surgical limbs of ACLR-D patients are at a higher risk of ACL injury due to the presence of greater knee valgus and external rotation angles and knee valgus moments.
