Carpal tunnel syndrome as a repetitive motion disorder.

The incidence of repetitive motion disorders is increasing and in 1990 comprised 48% of all reported workplace illnesses (up from 18% in 1980). Carpal tunnel syndrome is the most prevalent disease classified as a repetitive motion disorder, thus making its prevention and management an occupational health and safety priority. The clinical picture of carpal tunnel syndrome, pain and paresthesias on the palmar radial aspect of the hand, often worse at night, and/or exacerbated by repetitive, forceful use of the hand, is recognized readily. Carpal tunnel syndrome is a condition of middle aged people and most middle aged people work. It follows that more often than not carpal tunnel syndrome occurs in a work-place setting, and the extent to which the work contributes to the condition is of great interest regarding prevention and treatment. Some studies find little evidence supporting the concept of carpal tunnel syndrome as caused by work, whereas others propose that more than half of cases of carpal tunnel syndrome in workers may be attributed to workplace factors. It is explored whether the incidence, prevalence, and significance of carpal tunnel syndrome as a repetitive motion disorder is known.