Functional and Morphological Changes in the Deep Lumbar Multifidus Using Electromyography and Ultrasound.
Functional and Morphological Changes in the Deep Lumbar Multifidus Using Electromyography and Ultrasound.
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使用肌电图和超声检查深部腰椎多裂肌的功能和形态变化
DOI：
10.1038/s41598-018-24550-5
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发表时间：
2018-04-25
影响因子：
4.6
通讯作者：
Wang C
中科院分区：
文献类型：
--
作者：
Zhang S;Xu Y;Han X;Wu W;Tang Y;Wang C
表面肌电图（sEMG）研究表明，慢性腰痛（cLBP）涉及改变肌电图活动和形态结构的腰椎多裂肌（LM）超出疼痛感知;然而，大多数研究评价了浅表腰椎多裂肌。由于难以记录来自深多裂肌（DM）的肌电图（EMG）信号以确定神经肌肉激活模式，因此难以确定cLBP中功能和结构变化之间的关系。我们开发了一种新的方法来记录肌内肌电信号在DM的基础上的表面肌电信号系统和细线电极。我们测量了24名cLBP患者和26名无疼痛的健康对照者的DM的EMG信号，以确定神经肌肉激活的变化。我们还使用超声波测量DM肌肉厚度、横截面积和收缩活动，以确定EMG活动和结构损伤之间的潜在关系。cLBP患者的平均EMG和均方根降低，但中位频率和平均功率频率增加。平均肌电图与收缩活动呈正相关，但与非收缩性解剖异常无统计学相关性。我们的研究结果表明，cLBP改变神经肌肉的激活模式和形态结构的收缩活动的DM，提供深入了解疼痛感知的机制。
Surface electromyography (sEMG) studies have indicated that chronic low back pain (cLBP) involves altered electromyographic activity and morphological structure of the lumbar multifidus (LM) beyond pain perception; however, most studies have evaluated the superficial lumbar multifidus. It is difficult to record electromyography (EMG) signals from the deep multifidus (DM) to determine the neuromuscular activation patterns, making it difficult to determine the relationship between functional and structural changes in cLBP. We developed a novel method to record intramuscular EMG signals in the DM based on the sEMG system and fine-wire electrodes. We measured EMG signals of the DM in 24 cLBP patients and 26 pain-free healthy controls to identify changes in neuromuscular activation. We also used ultrasound to measure DM muscle thickness, cross-sectional area, and contraction activity to identify potential relationships between EMG activity and structural damage. cLBP patients had decreased average EMG and root mean square, but increased median frequency and mean power frequency. Average EMG was positively correlated with contractile activity, but not statistically correlated with noncontractile anatomical abnormalities. Our results suggest that cLBP alters the neuromuscular activation patterns and morphological structure of the contractile activity of the DM, providing insights into the mechanisms underlying pain perception.
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影响因子：
--
作者：
Hides, Julie;Gilmore, Craig;Bohlscheid, Emma
通讯作者：
Bohlscheid, Emma
DOI：
10.1016/j.apmr.2008.10.033
发表时间：
2009-07-01
影响因子：
4.3
作者：
Silfies, Sheri P.;Mehta, Rupal;Karduna, Andrew R.
通讯作者：
Karduna, Andrew R.
影响因子：
--
作者：
Hides, Julie;Stanton, Warren;Sexton, Margot
通讯作者：
Sexton, Margot
影响因子：
3.6
作者：
Tsao, Henry;Galea, Mary P.;Hodges, Paul W.
通讯作者：
Hodges, Paul W.
影响因子：
5.5
作者：
Moseley, GL;Hodges, PW;Gandevia, SC
通讯作者：
Gandevia, SC