Tendonitis is pain in or around a tendon, which is a band of strong tissue that connects a muscle to a bone. Tendons bend, stretch, and twist to help joints and muscles move. They can become inflamed ...

Hamstring tendonitis is swelling or tearing to one of the three hamstring tendons. It may cause pain around the knee and throughout the leg. Hamstring tendonitis may also lead to mobility impairment.