| Autor: |
GAO Dong, ZHUO Pei-pei, TIAN Dong, RAN Dan, XIA Qing, XIA Wen-tao |
| Jazyk: |
čínština |
| Rok vydání: |
2023 |
| Předmět: |
|
| Zdroj: |
Fayixue Zazhi, Vol 39, Iss 2, Pp 137-143 (2023) |
| Druh dokumentu: |
article |
| ISSN: |
1004-5619 |
| DOI: |
10.12116/j.issn.1004-5619.2022.221104 |
| Popis: |
ObjectiveTo explore the changes of elbow flexor muscle strength after musculocutaneous nerve injury and its correlation with needle electromyography （nEMG） parameters.MethodsThirty cases of elbow flexor weakness caused by unilateral brachial plexus injury （involving musculocutaneous nerve） were collected. The elbow flexor muscle strength was evaluated by manual muscle test （MMT） based on Lovett Scale. All subjects were divided into Group A （grade 1 and grade 2, 16 cases） and Group B （grade 3 and grade 4, 14 cases） according to their elbow flexor muscle strength of injured side. The biceps brachii of the injured side and the healthy side were examined by nEMG. The latency and amplitude of the compound muscle action potential （CMAP） were recorded. The type of recruitment response, the mean number of turns and the mean amplitude of recruitment potential were recorded when the subjects performed maximal voluntary contraction. The quantitative elbow flexor muscle strength was measured by portable microFET 2 Manual Muscle Tester. The percentage of residual elbow flexor muscle strength （the ratio of quantitative muscle strength of the injured side to the healthy side） was calculated. The differences of nEMG parameters, quantitative muscle strength and residual elbow flexor muscle strength between the two groups and between the injured side and the healthy side were compared. The correlation between elbow flexor manual muscle strength classification, quantitative muscle strength and nEMG parameters was analyzed.ResultsAfter musculocutaneous nerve injury, the percentage of residual elbow flexor muscle strength in Group B was 23.43% and that in Group A was 4.13%. Elbow flexor manual muscle strength classification was significantly correlated with the type of recruitment response, and the correlation coefficient was 0.886 （P |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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