Article

OBJECTIVE: To analyze differences in carpal tunnel syndrome (CTS) prevalence
using a combination of electrodiagnostic studies (EDSs) and symptoms using EDS
criteria varied across a range of cutpoints and compared with symptoms in both
>/=1 and >/=2 median nerve-served digits. DESIGN: Pooled data from 5 prospective
cohorts. SETTING: Hand-intensive industrial settings, including manufacturing,
assembly, production, service, construction, and health care. PARTICIPANTS:
Employed, working-age participants who are able to provide consent and undergo
EDS testing (N=3130). INTERVENTIONS: None. MAIN OUTCOME MEASURES: CTS prevalence
was estimated while varying the thresholds for median sensory latency, median
motor latency, and transcarpal delta latency difference. EDS criteria examined
included the following: median sensory latency of 3.3 to 4.1 milliseconds, median
motor latency of 4.1 to 4.9 milliseconds, and median-ulnar sensory difference of
0.4 to 1.2 milliseconds. EDS criteria were combined with symptoms in >/=1 or >/=2
median nerve-served digits. EDS criteria from other published studies were
applied to allow for comparison. RESULTS: CTS prevalence ranged from 6.3% to
11.7%. CTS prevalence estimates changed most per millisecond of sensory latency
compared with motor latency or transcarpal delta. CTS prevalence decreased by
0.9% to 2.0% if the criteria required symptoms in 2 digits instead of 1.
CONCLUSIONS: There are meaningful differences in CTS prevalence when different
EDS criteria are applied. The digital sensory latency criteria result in the
largest variance in prevalence.
CI - Copyright (c) 2014 American Congress of Rehabilitation Medicine. Published by
Elsevier Inc. All rights reserved.

Langue : ANGLAIS