Median and Ulnar Nerve Function in Tattoo Artists
Trial statusRecruiting
Trial phaseNot listed
Trial typeObservational
Biological sexAll
Age18+
SponsorGazi University
About this trial
This case-control study aims to investigate the effects of occupational hand-arm vibration exposure on median and ulnar nerve functions in tattoo artists. Chronic exposure to vibration generated by tattoo machines may lead to neurosensory impairment, reduced tactile sensitivity, and decreased hand strength. Objective assessments including nerve provocation tests, sensory threshold evaluation, two-point discrimination, vibration perception, grip and pinch strength measurements, and validated patient-reported outcome questionnaires will be used. Findings will be compared with age- and sex-matched healthy controls.
Eligibility criteria
This trial accepts healthy volunteersQualifiers
Age ≥ 18 years
Professional tattoo artists with at least 1 year of occupational experience (case group)
Healthy individuals without occupational vibration exposure (control group)
Voluntary participation and provision of informed consent
Disqualifiers
Diagnosis of diabetes mellitus
Diagnosis of peripheral neuropathy
History of cervical radiculopathy or cervical disc herniation
History of upper extremity surgery or injury
Trial population
Professional tattoo artists with at least one year of occupational exposure to vibration and age- and sex-matched healthy individuals.
Trial design
Design model
Case-control
Time perspective
Cross-sectional
Treatments tested in this trial
Not listed
Trial groups
20 Participants
are grouped into 2 trial groupsGroup A: Tattoo Artists (Vibration-Exposed)
Group B: Healthy Controls
Trial outcomes
Primary outcomes
1
Semmes-Weinstein Monofilament Threshold
Assessment of light touch sensory threshold using Semmes-Weinstein monofilaments applied to the index and little fingers.
Time frame
Baseline (single assessment session)Secondary outcomes
1
Two-Point Discrimination
Minimum distance (mm) at which two points are perceived as separate on index and little fingers
Time frame
Baseline (single assessment session)2
Vibration Perception Duration
Duration (seconds) of vibration perception using tuning fork (30 Hz and 256 Hz)
Time frame
Baseline (single assessment session)3
Grip Strength
Maximal hand grip strength measured using a dynamometer (kg)
Time frame
Baseline (single assessment session)4
Pinch Strength
Lateral and tip pinch strength measured using a pinch gauge (kg)
Time frame
Baseline (single assessment session)Sponsors and contacts
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Source ClinicalTrials.gov