Tendonitis is an inflammation of a tendon, a thick cord that attaches bone to muscle. Tendonitis in the knee is most often caused by repetitive motion or by an injury. Symptoms include pain at the site of the tendon and surrounding area of the knee. Pain may gradually build up or be sudden and severe. Acupuncture is excellent as a treatment for knee tendonitis because of its anti-inflammatory and pain reducing effects on the inflamed tendon(s). Acupuncture treatments over time can restore the tendon to normal functioning pain-free.