Disabling shoulder pain was related to two ergonomic factors and two psychosocial factors. It was not clear whether the disability was signalled by the inability to perform those two specific ergonomic actions or by some other disability. If the former then the result may be significant but could be little more than a self-fulfilling prophesy.
GJ Macfarlane et al. Annals of Rheumatic Diseases. September (2001) Vol. 60 #9 p 852.
Incidence of bilateral and unilateral shoulder pain was reported.
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