1 Inflammation of the tendons of the flexor muscles that run along the top of the foot. Flexor tendinitis is characterized by pain and a puffy swelling on top of the foot: the pain intensifies during running. It may be caused by lacing the shoes too tightly. The condition usually resolves itself within a week or two by resting the foot, immediately applying ice to the injury (for the first 72 h, 20 min at a time), loosening the laces, and keeping direct pressure off the tendons. If the pain persists for more than 2 weeks, medical attention should he sought.
2 Inflammation of the tendons of the flexors that run from the forearm across the wrist and into the hand and fingers. It is characterized by pain, soreness, and stiffness in one or more finger, and pain in the palm of the hand at the site of the tendon. It commonly occurs in those who repetitively and forcefully bend their fingers (e.g. racket players, golfer, and baseball pitchers). Initial treatment is rest and ice (see RICE) and anti-inflammatories. If the pain persists, medical attention is required: the affected fingers may need to be immobilized in a splint for a few days and more powerful anti-inflammatories used. If treated early, flexor tendinitis usually clears up in a few days. However, if the condition is allowed to deteriorate by continuing to put pressure on the tendon, it can become chronic and difficult to resolve. See also carpal tunnel syndrome.