The costs of occupational injuries occurring due to the repetitive use of hand tools are large in terms of both dollars and pain and suffering. One of the most frequently used hand tools in industry is the vertical hanging screwdriver or nutdriver. Although the use of this tool has been related to wrist injuries such a carpal tunnel syndrome, there is very little known about the impact of tool design on such injuries. The paper presents a preliminary study that uses EMG to evaluate power screwdriver design parameters.
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