Researchers at two different institutions in the UK have identified an injury, and an increase in its incidence, associated with playing the Wii.
"Wii knee" is the latest brand-name computer-entertainment associated injury, joining "Atari thumb" and "Redtube wrist." (Wait, was that my out-loud voice?) Researchers at Leeds Teaching Hospital identified and named the injury; The British Society for Surgery of the Hand also notes "an increase in the number of injuries caused by excessive use of Wii." What's more, they expect to see even more cases of it during/after the holidays.