Effects of knee sports unloading brace on knee kinematic in jogging condition
10.3969/j.issn.1001-1242.2024.08.010
- VernacularTitle:膝关节运动减压护具在慢跑状态下对膝关节运动学的影响
- Author:
Luqi GUO
1
;
Liugen WANG
;
Ye LUO
Author Information
1. 上海体育学院"运动健身科技"省部共建教育部重点实验室,上海市,200438
- Publication Type:Journal Article
- Keywords:
knee;
sports unloading brace;
kinematics;
gait analysis
- From:
Chinese Journal of Rehabilitation Medicine
2024;39(8):1155-1161
- CountryChina
- Language:Chinese
-
Abstract:
Objective:To investigate the biomechanical changes in knee kinematics before and after wearing knee sportsunloading brace,and the mechanism of providing a protection for knee injuries in the active population.Method:Thirty healthy university students were enrolled and gait analysis was performed using a portableknee motion analysis system under the condition of jogging on a treadmill at a speed of 5 km/h. The changesin knee kinematics before and after wearing the sports brace were compared,including the changes in theproximal-distal translation,internal-external translation,anterior-posterior translation,flexion-extension angle,ab-duction-adduction rotation,internal-external rotation of the knee joint during the stance phase and swing phaseof a gait cycle.Result:During the stance phase,wearing the knee sports unloading brace significantly increased the proximal-distal translation of the knee by 3.4 mm,decreased the abduction-adduction rotation by 2.8°,and significantlydecreased the internal-external translation,anterior-posterior translation,flexion-extension angle and interna-ex-ternal rotation. During the swing phase,wearing the knee sports unloading brace significantly increased theproximal-distal translation of the knee by 8.7 mm and decreased the abduction-adduction rotation by 3.5°,withsignificant reductions in the flexion-extension angle and internal-external rotation. However,changes in anterior-posterior translation (P=0.49) and internal-external translation (P=0.86) were not significant.Conclusion:During the stance phase (primary loading phase),the knee sports unloading brace effectively sup-ports the knee joint and enhances its stability by increasing the proximal-distal translation and restricting the joint mobility. The stabilization effect during the swing phase is relatively weaker compared to the stance phase.
