Tendinitis is an inflammation of the tendon. The condition may also involve the tendon sheath usually occurring close to where the tendon goes into the muscle.
Tendons are generally healthy structures that appear glistening white to the naked eye.
If you've ever carved a turkey, the tendons are the tough bands you cut through to get the drumsticks apart. The most common cause of tendinitis is overuse and repetitive motion from recreational, athletic, or occupational activities. The pain is usually worsened with repetitive motion, but it can also be present at rest. There can also be mild swelling over the tendon. The forearm is placed in supine position, fist is flexed against resistance while forearm is being held down.