Upper limb muscle imbalance in tennis elbow: A functional and electromyographic assessment
Upper limb muscle imbalance in tennis elbow: A functional and electromyographic assessment
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DOI：
10.1002/jor.20458
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发表时间：
2007-12-01
影响因子：
2.8
通讯作者：
Frostick, Simon P.
中科院分区：
文献类型：
--
作者：
Alizadehkhaiyat, Omid;Fisher, Anthony C.;Frostick, Simon P.
本研究的目的是调查上肢肌肉组织的力量、疲劳性和活动性，以阐明肌肉不平衡在网球肘病理生理学中的作用。研究人员对从大学医院上肢骨科诊所招募的 16 名临床诊断为网球肘的患者与从大学学生和工作人员中招募的 16 名没有上肢肌肉骨骼问题史的对照受试者进行了比较。测量两侧握力、掌指肌、手腕和肩部的肌肉力量。在 50% 最大随意收缩的等长收缩过程中测量五块前臂和两块肩部肌肉的肌电活动（RMS 幅度）和疲劳特征（中频斜率）。所有力量测量都显示出 C 方面的显性差异，但 TE 方面没有显性差异。与对照组相比，网球肘患者的手/手腕和肩部力量以及桡侧腕伸肌 (ECR) 活动均降低 (p < 0.05)，而疲劳程度正常。网球肘存在全身性上肢无力，这可能是由于回避恐惧引起的废用和失调综合征，需要预防和治疗。网球肘中前臂肌肉的激活不平衡（桡侧伸肌活动减少）可能是由于保护性疼痛相关抑制，可能导致广泛的上肢肌肉不平衡。 (C) 2007 年骨科研究学会。
The purpose of this study was to investigate strength, fatigability, and activity of upper limb musculature to elucidate the role of muscular imbalance in the pathophysiology of tennis elbow. Sixteen patients clinically diagnosed with tennis elbow, recruited from a university hospital upper limb orthopedic clinic, were compared with 16 control subjects with no history of upper limb musculoskeletal problem, recruited from university students and staff. Muscle strength was measured for grip, metacarpophalangeal, wrist, and shoulder on both sides. Electromyographic activity (RMS amplitude) and fatigue characteristics (median frequency slope) of five forearm and two shoulder muscles were measured during isometric contraction at 50% maximum voluntary contraction. All strength measurements showed dominance difference in C, but none in TE. In tennis elbow compared to controls, hand/wrist and shoulder strength and extensor carpi radialis (ECR) activity were reduced (p < 0.05), while fatigue was normal. A global upper limb weakness exists in tennis elbow, This may be due to disuse and deconditioning syndrome caused by fear avoidance, and needs to be addressed in prevention and treatment. Activation imbalance among forearm muscles (reduced extensor carpi radialis activity) in tennis elbow, probably due to protective pain-related inhibition, could lead to a widespread upper limb muscle imbalance. (C) 2007 Orthopaedic Research Society.