Can you get tennis elbow from playing the piano?
Your elbows may seem like an odd place to hurt, but keep in mind that most of the muscles that act on your wrist and fingers have their origins (Origin Tendons) at your inner and outer elbows. Which does put pianists and keyboard players at risk for Tennis and Golfer's Elbow.
Does piano cause tendonitis?
A pianist who practices relentlessly, playing for many hours on end, will be prone to developing tendonitis, an inflammation of the tendon that often occurs at a joint such as the wrist.