Conrad B, Benecke R
Arch Psychiatr Nervenkr (1970). 1979 Dec;227(4):333-9. doi: 10.1007/BF00344818.
The aim of the present investigation was to establish the value of gluteal muscles (m.gluteus medius, GME; m.gluteus maximus, GMX) as segmental reference muscles in the topical diagnosis of lumbar root compression syndromes. The methodological rationale consisted in determining the frequency with which denervation potentials could be recorded in the GME and GMX of patients with clinically and electromyographically well-defined monosegmental or bisegmental lumbar root compression syndromes. Of the L5-syndromes (N=36), 81% revealed denervation potentials in GME, but only 6% in GMX. Of the S1 syndromes (N=26), 63% exhibited denervation potentials in GMX and 32% in GME. L5 syndromes showed a better correlation of positive findings to GME than S1 syndromes to GMX. As far as the differential diagnosis is concerned, the advantages of recording EMG from GME and GMX are two-fold: (a) the immediate certainty of excluding a peripheral nerve lesion and (b) a reduction in the incidence of false negative findings.
本研究的目的是确定臀肌（臀中肌，GME；臀大肌，GMX）在腰椎神经根压迫综合征局部诊断中作为节段性参考肌肉的价值。方法学原理在于确定在临床和肌电图明确诊断为单节段或双节段腰椎神经根压迫综合征的患者的GME和GMX中记录到失神经电位的频率。在L5综合征患者（N = 36）中，81%在GME中显示失神经电位，但在GMX中仅为6%。在S1综合征患者（N = 26）中，63%在GMX中表现出失神经电位，32%在GME中表现出失神经电位。L5综合征的阳性结果与GME的相关性优于S1综合征与GMX的相关性。就鉴别诊断而言，从GME和GMX记录肌电图的优势有两方面：（a）能立即确定排除周围神经病变；（b）减少假阴性结果的发生率。
