NCT07496398

Median and Ulnar Nerve Function in Tattoo Artists

Occupational Hand-Arm Vibration Exposure and Its Effects on Median and Ulnar Nerve Function in Tattoo Artists: A Case-Control Study

• Status: Recruiting
• Phase: —
• Study type: Observational
• Enrollment: 20 (estimated)
• Sponsor: Gazi University · Academic / Other
• Sex: All
• Age: 18 Years
• Healthy volunteers: Accepted

Summary

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.

Detailed description

This observational cross-sectional case-control study evaluates neurosensory and motor function differences between professional tattoo artists exposed to long-term occupational vibration and healthy controls. Chronic exposure to hand-arm vibration (HAV) has been associated with peripheral neuropathy, entrapment neuropathies, and sensory receptor dysfunction. Participants will undergo standardized assessment including: Tinel, Phalen, reverse Phalen, and elbow flexion tests Semmes-Weinstein monofilament testing Two-point discrimination Vibration perception testing (30 Hz and 256 Hz) Grip and pinch strength measurements Brief Michigan Hand Outcomes Questionnaire Boston Carpal Tunnel Questionnaire The study aims to determine whether occupational vibration exposure is associated with measurable alterations in median and ulnar nerve sensory and motor function.

Conditions

• Peripheral Neuropathy Pain
• Carpal Tunnel Syndrome (CTS)
• Cubital Tunnel Syndrome

Timeline

• Start date: 2026-03-01
• Primary completion: 2026-08-01
• Completion: 2026-08-01
• First posted: 2026-03-27
• Last updated: 2026-03-27

Locations

1 site across 1 country: Turkey (Türkiye)