BlackBerry thumb and osteoarthritis

BlackBerry thumb is a neologism that refers to a form of repetitive strain injury (RSI) caused by the frequent use of the thumbs to press buttons on PDAs, smartphones, or other mobile devices.
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Overreliance on small hand-held devices may be predisposing the current generation of electronics addicts to early development of osteoarthritis and other potentially chronic joint conditions such as “BlackBerry thumb,” some physiotherapists say.
(http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3153536/)