7, 8 Recently, published studies have shown opposite results, 5, 9–11 and several reviews concluded that there was no evidence for such an association. Some past studies have shown a possible link between computer exposure at work and musculoskeletal disorders including CTS. However, the growing use of computers and the concurrent increase in musculoskeletal complaints among users have led to a long-running controversy over the role that exposure to computer use may play in the development of CTS. 1, 2 Studies on CTS have reviewed the potential risk factors and confirmed its relationship with biomechanical exposure at work 3–6 CTS occurs more frequently among workers in occupations with high physical exposures, that is, forceful and repetitive hand movements combined with awkward posture. It is also the most common entrapment neuropathy of the upper limb. The similar association values found in the two studies is noteworthy.Ĭarpal tunnel syndrome (CTS) is a common, painful and costly disease among working adults. The Cosali cohort was representative of a French region's working population, and the PrediCTS study followed a large group of workers over a long period of time with low attrition and used a robust case definition that included nerve conduction studies. The strengths of both cohorts were their prospective, longitudinal study design and the rigorous case definitions of incident CTS cases. The study had limitations: attrition for the Cosali cohort and definition based on clinical examination, representativeness of the PrediCTS study, measures used to assess the exposure to computer use.
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