F Gerr et al. J Occup. Rehab. (2006) Vol.16 p 265 – 277
“Keyboard use and musculoskeletal outcomes among computer users”
The authors conclude that exposure measurement is a key weakness of studies of proposed links between keyboard use and upper limb symptoms. As it stands there is a slight balance in favour of a conclusion that longer hours of use increase the rate of adverse hand/arm symptoms.