E. Turkof et al., INTRAOPERATIVE SPINAL ROOT STIMULATION TO DETECT MOST PROXIMAL SITE OF LEPROUS ULNAR NEURITIS, Lancet, 343(8913), 1994, pp. 1604-1605
In 10 patients with leprous ulnar neuritis, we investigated the most p
roximal site of lesion in the affected nerves. Spinal roots C8 and T1
were stimulated intraoperatively to evoke efferent mixed compound nerv
e action potentials which were recorded from the exposed ulnar nerves.
The site at which amplitudes reached a maximum was considered the mos
t proximal site of lesion. Nerve damage was found far proximally from
the thickened segments in otherwise inconspicuous sections. Epineuriot
omy within these apparently unaffected segments revealed fibrosis of t
he interfascicular epineurium in 9 patients, which is an indication fo
r microsurgical interfascicular neurolysis.