Carpal tunnel syndrome: neurophysiological results of surgery based on preoperative electrodiagnostic testing.
Fifty-three hands with carpal tunnel syndrome had pre- and postoperative evaluations of median nerve distal motor latency (from wrist to thenar muscles) and orthodromic sensory nerve conduction velocity (from thumb and middle finger to wrist). At 6 months we observed a neurophysiological return to normal in all cases with normal preoperative distal motor latency and in about 50% of the hands with preoperative distal motor latency between 4 and 6 ms. Prolongation of the distal motor latency over 6 ms was not followed by return to neurophysiological normality, although some degree of sensory function was restored in the majority of cases.
Padua
L
L
Department of Neurology, Catholic University, Rome, Italy.
Lo Monaco
M
M
Padua
R
R
Tamburrelli
F
F
Gregori
B
B
Tonali
P
P
D000328:Adult; D000368:Aged; D002349:Carpal Tunnel Syndrome / Q000503:physiopathology* / Q000601:surgery*; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D009431:Neural Conduction; D011446:Prospective Studies; D016896:Treatment Outcome