Abstract
This study examined the correlation of electrodiagnostic test results and symptom outcome after carpal tunnel release. After meeting specific inclusion and exclusion criteria and failing conservative management, 167 patients (227 hands) underwent an open carpal tunnel release. Of 99 hands with a positive electromyographic/nerve conduction velocity study, 93 (93%) had resolved or improved symptoms. This finding compares with a 93% resolution or improvement rate in 27 hands with a negative electromyographic/nerve conduction velocity study and a 93% resolution or improvement in postoperative symptoms in 101 hands on which no electromyographic/nerve conduction velocity study had been performed. Statistical analysis demonstrated no significant differences in final symptom status after carpal tunnel release when comparing patients who had positive, negative, or no electrodiagnostic preoperative testing. Given specific clinical criteria for establishing the diagnosis of carpal tunnel syndrome, electrodiagnostic testing does not appear to correlate with improved final symptomatic outcome after carpal tunnel release.
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