Quadriceps femoris muscle morphology and function after ACL injury: a differential response in copers versus non-copers.
Quadriceps femoris muscle morphology and function after ACL injury: a differential response in copers versus non-copers.
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ACL 损伤后股四头肌的形态和功能：应对者与非应对者的差异反应。
DOI：
10.1016/j.jbiomech.2004.04.004
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发表时间：
2005
影响因子：
2.4
通讯作者：
Buchanan,ThomasS
中科院分区：
文献类型：
--
作者：
Williams,GlennN;Snyder-Mackler,Lynn;Barrance,PeterJ;Buchanan,ThomasS
形态学（体积和峰值横截面积）和自愿肌肉控制的27名运动员进行了评估与磁共振成像（MRI）和一个既定的方法测试神经肌肉控制，以解释为什么有些人能够科普前交叉韧带（ACL）损伤（copers），而大多数不能（non-copers）。轴向自旋回波T1加权MRI图像采集从踝关节榫眼的水平髂嵴。受试者的股四头肌、腘绳肌和腓肠肌从MRI图像中进行数字重建。然后计算每块肌肉的体积和峰值横截面积（CSA）。自愿肌肉控制进行了评估，使用一个既定的目标匹配协议，要求受试者产生和调节力与控制范围内的方向。当受试者进行实验时，从七块肌肉收集肌电信号。循环统计方法用于计算特异性指数，该指数描述了每块肌肉的活动模式相对于其主要作用方向的集中程度。然后比较非copers，copers和未受伤的受试者的结果。非copers表现出显着更大的股四头肌萎缩比copers。在股外侧肌中观察到最深刻的差异。非copers也显示减少股外侧肌和外侧腓肠肌的控制。在copers和未受伤的受试者的结果中观察到的差异很小。一般来说，警察的结果介于非警察和未受伤的受试者之间。这项研究的结果表明，股四头肌的肌肉功能是一个关键因素的差异反应ACL损伤。
The morphology (volume and peak cross-sectional area) and voluntary muscle control of 27 athletic people were evaluated with magnetic resonance imaging (MRI) and an established method of testing neuromuscular control in order to explain why some people are able to cope with anterior cruciate ligament (ACL) injury (copers), whereas most cannot (non-copers). Axial spin-echo T1 weighted MRI images were acquired from the level of the ankle mortise to the iliac crest. The subjects’ quadriceps, hamstrings, and gastrocnemius muscles were digitally reconstructed from the MRI images. The volume and peak cross-sectional area (CSA) of each muscle were then calculated. Voluntary muscle control was evaluated using an established target-matching protocol that requires subjects to produce and modulate force with control over a range of directions. Electromyographic signals were collected from seven muscles as the subjects performed the experiment. Circular statistics methods were used to calculate a specificity index that describes how focused the activity pattern of each muscle was with respect to its principal direction of action. The results of the non-copers, copers, and uninjured subjects were then compared. The non-copers displayed significantly greater quadriceps atrophy than the copers. The most profound differences were observed in the vastus lateralis muscle. The non-copers also displayed diminished vastus lateralis and lateral gastrocnemius muscle control. Little differences were observed in the results of the copers and uninjured subjects. In general, the copers’ results fell between those of the non-copers and uninjured subjects. The results of this study suggest that quadriceps muscle function is a critical factor in the differential response to ACL injury.
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改变前十字韧带缺陷患者的股四头肌控制。
影响因子：
4.1
作者：
Williams,GlennN;Barrance,PeterJ;Snyder-Mackler,Lynn;Buchanan,ThomasS
通讯作者：
Buchanan,ThomasS
影响因子：
2.5
作者：
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DOI：
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发表时间：
1994-04-01
影响因子：
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作者：
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通讯作者：
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影响因子：
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作者：
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