Magnetic stimulation in the diagnosis of lumbosacral radiculopathy.
Five patients presenting with sensory-motor disturbances consistent with a clinical diagnosis of L5 or S1 radiculopathy were studied. All had conventional nerve conduction tests and electromyography. The lumbosacral roots were stimulated in the lumbosacral region by using the Cadwell MES-10 Magneto-electric stimulator. The compound muscle action potentials were recorded bilaterally by surface electrodes applied to the soleus and tibialis anterior muscles. The latencies to the affected muscles were significantly prolonged. The appropriate root dysfunction was confirmed at operation or by the imaging techniques. It was concluded that surface stimulation of the lumbosacral roots by a magnetic coil is a potentially useful technique for the non-invasive evaluation of the function of the lumbosacral roots.
Chokroverty
S
S
Department of Neurology, UMDNJ-Robert Wood Johnson Medical School.
Sachdeo
R
R
Dilullo
J
J
Duvoisin
R C
RC
D000368:Aged; D000369:Aged, 80 and over; D004568:Electrodiagnosis / Q000295:instrumentation; D004574:Electromagnetic Fields; D055590:Electromagnetic Phenomena; D005260:Female; D006801:Humans; D007405:Intervertebral Disc Displacement / Q000150:complications; D008159:Lumbar Vertebrae / Q000503:physiopathology; D008160:Lumbosacral Plexus / Q000503:physiopathology; D008297:Male; D008875:Middle Aged; D009132:Muscles / Q000294:innervation; D009408:Nerve Compression Syndromes / Q000175:diagnosis* / Q000503:physiopathology; D011843:Radiculopathy / Q000175:diagnosis* / Q000503:physiopathology; D011930:Reaction Time / Q000502:physiology; D013126:Spinal Nerve Roots / Q000503:physiopathology*; D013130:Spinal Stenosis / Q000503:physiopathology