PMID- 14658043 OWN - NLM STAT- MEDLINE DCOM- 20040128 LR - 20061115 IS - 1590-1874 (Print) IS - 1590-1874 (Linking) VI - 24 IP - 4 DP - 2003 Nov TI - Comparison of sensitivities of macro EMG and concentric needle EMG in L4 radiculopathy. PG - 258-60 AB - 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. FAU - Ulas, U H AU - Ulas UH AD - Department of Neurology, Gulhane Medical School, 06018 Etlik, Ankara, Turkey. FAU - Cengiz, B AU - Cengiz B FAU - Alanoglu, E AU - Alanoglu E FAU - Ozdag, M F AU - Ozdag MF FAU - Odabasi, Z AU - Odabasi Z FAU - Vural, O AU - Vural O LA - eng PT - Comparative Study PT - Journal Article PL - Italy TA - Neurol Sci JT - Neurological sciences : official journal of the Italian Neurological Society and of the Italian Society of Clinical Neurophysiology JID - 100959175 SB - IM MH - Action Potentials/physiology MH - Adult MH - Aged MH - Electric Stimulation/methods MH - Electrodes MH - Electromyography/classification/*methods MH - Female MH - Humans MH - Lumbar Vertebrae MH - Male MH - Middle Aged MH - Motor Neurons/physiology MH - Muscle, Skeletal/abnormalities/physiopathology MH - *Needles MH - Radiculopathy/*diagnosis/physiopathology EDAT- 2003/12/06 05:00 MHDA- 2004/01/30 05:00 CRDT- 2003/12/06 05:00 PHST- 2003/04/14 00:00 [received] PHST- 2003/08/18 00:00 [accepted] PHST- 2003/12/06 05:00 [pubmed] PHST- 2004/01/30 05:00 [medline] PHST- 2003/12/06 05:00 [entrez] AID - 10.1007/s10072-003-0150-y [doi] PST - ppublish SO - Neurol Sci. 2003 Nov;24(4):258-60. doi: 10.1007/s10072-003-0150-y.