Disorder of Muscles around Knee with Meniscus Injury: Study with Surface Electromyography
10.3969/j.issn.1006-9771.2019.05.016
- VernacularTitle:半月板损伤患者膝周肌肉的表面肌电图分析
- Author:
Hui-ping LU
1
;
Rui-hua CHEN
1
;
Gao-fei ZHANG
2
;
Xin CHEN
1
Author Information
1. Department of Rehabilitation, Fuzhou 2nd Hospital, Xiamen University, Fuzhou, Fujian 350007, China
2. Fujian University of Traditional Chinese Medicine, Fuzhou, Fujian 350122, China
- Publication Type:Research Article
- Keywords:
meniscus injury;
knee;
muscle;
suface electromyography
- From:
Chinese Journal of Rehabilitation Theory and Practice
2019;25(5):586-589
- CountryChina
- Language:Chinese
-
Abstract:
Objective:To investigate the influence of meniscus injury on the function of muscles around knee in patients with meniscus injury. Methods:From February, 2017 to February, 2018, the suface electromyography of vastus lateralis (VL), rectus femoris (RF), vastus medialis (VM) and biceps femoris (BF) were recorded and analyzed in 22 patiens with unilateral meniscus injury, during squatting down-standing up test and maximal isometric voluntary contraction at knee flexing 70°. Results:During squatting down-standing up test, the average electromyography (AEMG) of VL and BF was less in affected knee than in unaffected knee (t > 3.945, Z > 3.847, P < 0.001), and the coactivity ratio of hamstrings in affected knee was higher (t > 3.650, P < 0.01). The AEMG of VL, RF, VM and BF was less in affected knee than in unaffected knee (t > 2.907, Z = 4.107, P < 0.01) during maximal isometric voluntary contraction at knee flexing 70°. Conclusion:sEMG can be used to quantitatively evaluate the muscle function around knee for patients with meniscus injury in different motion states. Patients with meniscus injury demonstrate impaired muscular function and altered muscle balance around knee, which need to be corrected during rehabilitation.
