Related Experiment Video
Updated: May 23, 2026

09:17
Using a Virtual Store As a Research Tool to Investigate Consumer In-store Behavior
Published on: July 24, 2017
[WMSDs in supermarket cashiers]
Cinzia Di Pede1, Gianluca Manuli, Fulvia Dini
1UF PISLL Azienda USL 5 Pisa, Italy. c.dipede@usl5.toscana.it
Giornale Italiano Di Medicina Del Lavoro Ed Ergonomia
|March 29, 2012
Summary
Supermarket cashiers show high rates of Cumulative Trauma Disorders (CTD), particularly wrist nerve impairments and shoulder tendinosis. Many experience bilateral symptoms and comorbidities, necessitating improved workplace ergonomics and prevention strategies.
Area of Science:
- Occupational Health
- Musculoskeletal Disorders
- Epidemiology
Context:
- Supermarket cashiers frequently report Cumulative Trauma Disorders (CTD) affecting the shoulder and wrist.
- Previous studies indicate a high prevalence of these conditions in this occupational group.
Purpose:
- To assess the prevalence of CTD in female supermarket cashiers in the Pisa area.
- To identify specific nerve impairments and shoulder conditions through clinical examination and diagnostic tests.
Summary:
- A study of 128 cashiers revealed significant median nerve impairment (34.4%) and ulnar nerve impairment (11.7%), with many cases being bilateral.
- Rotator cuff tendinosis was found in 19.5% of participants, and 44.6% presented with comorbidities.
- A BiCo index was calculated to account for bilaterality and comorbidity.
Impact:
- The study highlights a much higher CTD prevalence than in the general population.
- Findings underscore the need for primary prevention strategies, including enhanced ergonomics and worker education.
- Addressing bilaterality and comorbidity is crucial for effective occupational health management.

