期刊
MUSCLE & NERVE
卷 43, 期 3, 页码 335-341出版社
WILEY-BLACKWELL PUBLISHING, INC
DOI: 10.1002/mus.21878
关键词
macro EMG; MUNE; MUNIX; polio; prior polio; reinnervation
Our objective was to establish the usefulness of the noninvasive method of the motor unit number index (MUNIX) in a large muscle and to study how macro electromyography (EMG) and MUNIX complement each other in describing the motor units (MUs) in prior polio. MUNIX and macro EMG were performed in 48 tibialis anterior muscles in 33 prior polio patients. In addition, the reproducibility of MUNIX was investigated. It is shown that MUNIX can be used to characterize MUs with high reproducibility, even in a large muscle. As judged by MUNIX values, the patients had a 25% reduction of motor neurons, whereas the macro EMG indicated a loss of 60% of the neurons. Macro EMG showed more pronounced changes compared with control material than the MUNIX. One of the reasons for this finding may be the difference in MU populations studied with the two methods. Muscle Nerve 43: 335-341, 2011
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