Nintendo was lauded for its initiative in incorporating physically demanding actions into some of its games. Many sports games on the Wii require the gamer to mimic the actions shown in the game. For instance, while playing a golf game, the user needs to hold his Wii remote like he's holding a club and he has to swing it to complete the shot.

Such gameplay, though innovative, has also given rise to a number of physical injuries, especially in those gamers who are not diligent with their exercising.

Two British institutions, British Society for Surgery of the Hand (BSSH) and Leeds Teaching Hospital say that Wii-related injuries are on the rise. The researchers at Leeds Teaching Hospital have also coined a term for these types of injuries, the "Wii Knee," which occurs due to the excessive use of Wii.

A surgeon at BSSH claimed that they recently treated a patient who had fractured one of her bones while playing on her Wii.

The "Wii Knee" phenomenon is expected to rise after Christmas as it is one of the most sought after Christmas presents.