Medial epicondylitis (golfer's elbow) causes pain on the inner side of the elbow. It is a less common injury than tennis elbow and, despite its name, it is more likely to be related an occupation that requires repeated elbow movements (such as construction work) than to sports. When it does occur as a sports injury, medial epicondylitis can be triggered by repeatedly swinging a golf club or throwing a baseball.
Tendonitis in the knee - Jumper's knee, the most common form of knee tendonitis, involves either the patellar tendon at the lower edge of the kneecap or the quadriceps tendon at the upper edge of the kneecap. It is a common overuse injury, especially in basketball players and distance runners.
Tendonitis in the wrist - In the wrist, tendonitis commonly appears in the form of de Quervain's disease, a condition that causes pain in the back of the wrist at the base of the thumb. Although de Quervain's disease usually occurs in people who repeatedly grasp or pinch with the thumb, it sometimes develops during pregnancy or for no known reason.
Achilles tendonitis - This form of tendonitis affects the Achilles tendon, the large ropelike tendon attached to the heel bone at the back of the foot. Achilles tendonitis usually is caused by overuse, especially in sports that require running or repeated jumping, and it accounts for 15% of all running injuries. Achilles tendonitis also may be related to faulty running technique or to poorly fitting shoes, if the back of the shoe digs into the Achilles tendon above the heel. Less often, Achilles tendonitis is related to an inflammatory illness, such as ankylosing spondylitis, Reiter's syndrome, gout or rheumatoid arthritis.
Symptoms
In general, tendonitis causes pain in the tissues surrounding a joint, especially after the joint is used too much during play or work. In some cases, the joint may feel weak, and the area may be red, swollen and warm to the touch.
When tendonitis is caused by an infection such as gonorrhea, there may be other symptoms, including rash, fever, or a discharge from the vagina or penis.
