Letters Section Editor: Stephen J. Lurie,
MD, PhD, Senior Editor.
To the Editor: Dr Andersen and colleagues1 concluded that computer use is unrelated to CTS.
Respondents in this study, however, only used their keyboard for an average
of 8 to 9 hours per week, hardly intensive use by US standards, where workers
may key intensively for 30 h/wk or more.2 Respondents
did make more intensive use of a mouse, and the authors noted an association
between intensive mouse use and possible CTS. Another recent Danish study
also found that mouse use increases risk of musculoskeletal injury.3 Both studies found no association of psychosocial
factors with injury risks.
Hedge A. Computer Use and Risk of Carpal Tunnel SyndromeComputer Use and Risk of Carpal Tunnel Syndrome. JAMA. 2003;290(14):1853-1855. doi:10.1001/jama.290.14.1853-a