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Prevalence of bifid median nerves and persistent median arteries and their association with carpal tunnel syndrome in a sample of Latino poultry processors and other manual workers.

Authors
Walker-FO; Cartwright-MS; Blocker-JN; Arcury-TA; Suk-JI; Chen-H; Schultz-MR; Grzywacz-JG; Mora-DC; Quandt-SA
Source
Muscle Nerve 2013 Oct; 48(4):539-544
NIOSHTIC No.
20043370
Abstract
INTRODUCTION: The prevalence of bifid median nerves and persistent median arteries, their co-occurrence, and their relationship to carpal tunnel syndrome (CTS) are only understood partially. METHODS: We screened 1026 wrists of 513 Latino manual laborers in North Carolina for bifid median nerves and persistent median arteries using electrodiagnosis and ultrasound. RESULTS: A total of 8.6% of wrists had a bifid median nerve, and 3.7% of wrists had a persistent median artery independent of subgroup ethnicity, age, gender, or type of work. An association with definite carpal tunnel syndrome was not found. The presence of either anatomic variant was associated with a high likelihood of co-occurrence of another variant in the same or the contralateral wrist. CONCLUSIONS: The occurrence of median anatomic variants can be determined in field studies using ultrasound. Persistent median arteries and bifid median nerves tend to co-occur but do not put manual laborers at additional risk of developing CTS.
Keywords
Epidemiology; Nerves; Nerve-function; Carpal-tunnel-syndrome; Sociological-factors; Humans; Men; Women; Musculoskeletal-system; Musculoskeletal-system-disorders; Workers; Manual-materials-handling; Statistical-analysis; Anatomy; Author Keywords: entrapment neuropathy; epidemiology; neuromuscular ultrasound; occupational health; poultry workers
Contact
Francis O. Walker, MD, Department of Neurology, Wake Forest School of Medicine, Medical Center Boulevard, Winston-Salem, North Carolina 27157-1078
CODEN
MUNEDE
Publication Date
20131001
Document Type
Journal Article
Email Address
fwalker@wakehealth.edu
Funding Type
Grant
Fiscal Year
2014
NTIS Accession No.
NTIS Price
Identifying No.
Grant-Number-R01-OH-009251; M112013
Issue of Publication
4
ISSN
0148-639X
Source Name
Muscle & Nerve
State
NC
Performing Organization
Wake Forest University Health Sciences - Winston-Salem, North Carolina
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