This article published in Quarterly Journal of Medicine by Koh, et al., (2002) did a questionaire survey of 139 patients with long-term poliomyelitis (50 years) and found that 64% of the 103 patients who replied had upper limb pain and 74% used mobility aids. These data suggest that over-use of mobility aids may b a cuase of increasing upper limb pain in long term polio.