Magnetic stimulation in the determination of lumbosacral motor radiculopathy.
Magnetic stimulation was utilised to diagnose lumbosacral motor radiculopathy non-invasively. Magnetic coil stimulation estimated peripheral motor nerve conduction time (MNCT) which, used in combination with F response, allowed calculation of "motor root conduction time (MRCT)," response being recorded from abductor hallucis. Twenty-five normal controls and 26 patients with lumbar spondylosis were studied. The mean interside difference (left minus right) of MRCT in the control was +0.06 msec (range: -0.88 to +0.74 msec). On clinical and radiological grounds, patients with spondylosis were grouped into those with: (I) no lumbosacral root compression, (II) root compression without motor sign, and (III) root compression with motor deficit. All patients in group III and 36% of cases of group II had MRCT significantly prolonged on the affected side.
Banerjee
T K
TK
Wessex Neurological Centre, Southampton University Hospitals, UK.
Mostofi
M S
MS
Us
O
O
Weerasinghe
V
V
Sedgwick
E M
EM
D000328:Adult; D004558:Electric Stimulation; D004576:Electromyography; D005260:Female; D006801:Humans; D008161:Lumbosacral Region; D008280:Magnetics; D008297:Male; D008875:Middle Aged; D009132:Muscles / Q000503:physiopathology; D009408:Nerve Compression Syndromes / Q000503:physiopathology*; D011930:Reaction Time / Q000502:physiology; D013126:Spinal Nerve Roots / Q000503:physiopathology*