L4神经根病中宏肌电图与同心针肌电图敏感性的比较。

Comparison of sensitivities of macro EMG and concentric needle EMG in L4 radiculopathy.

作者信息

Ulas U H, Cengiz B, Alanoglu E, Ozdag M F, Odabasi Z, Vural O

机构信息

Department of Neurology, Gulhane Medical School, 06018 Etlik, Ankara, Turkey.

出版信息

Neurol Sci. 2003 Nov;24(4):258-60. doi: 10.1007/s10072-003-0150-y.

DOI:10.1007/s10072-003-0150-y

PMID:14658043

Abstract

The purpose of this study was to compare the sensitivities of macro EMG (mEMG) and concentric needle EMG (cnEMG) in showing abnormality in L4 radiculopathy. We evaluated 23 patients with clinically and radiologically proven L4 root lesions. Among these patients, 21 (92%) had cnEMG abnormalities. Out of 21 patients with cnEMG abnormality, 3 (14%) had fibrillations and positive sharp waves, 8 (38%) had interference pattern abnormality and all of them had motor unit potential (MUP) abnormality on quantitative MUP analysis. Seventeen patients (74%) had mEMG abnormality. Diagnostic yield of cnEMG is higher than mEMG in L4 radiculopathy. mEMG may not contribute much to the diagnosis of lumbar radiculopathy.

摘要

本研究的目的是比较宏肌电图（mEMG）和同心针电极肌电图（cnEMG）在显示L4神经根病异常方面的敏感性。我们评估了23例经临床和影像学证实的L4神经根病变患者。在这些患者中，21例（92%）存在cnEMG异常。在21例cnEMG异常的患者中，3例（14%）出现纤颤电位和正锐波，8例（38%）出现干扰相异常，并且所有这些患者在运动单位电位（MUP）定量分析中均有运动单位电位异常。17例患者（74%）存在mEMG异常。在L4神经根病中，cnEMG的诊断阳性率高于mEMG。mEMG对腰椎神经根病的诊断可能贡献不大。