Popliteal Tendonitis

Popliteal tendonitis is another potential cause of pain at the back of the knee. The popliteal tendon is located at the back of the knee joint and helps to stabilize the knee during movement. Tendonitis occurs when the tendon becomes inflamed and irritated. This can be caused by overuse, repetitive activities, or sudden, forceful movements. Common symptoms of popliteal tendonitis include pain at the back of the knee, tenderness, swelling, and difficulty bending or straightening the leg.