Knee bending feeling tendon pulling considerations and strenuous exercise, cold stimulation and other physiological factors, may also be related to popliteal tendonitis, knee osteoarthritis, popliteal fossa disease and other pathologic factors. 1. Physiological factors: strenuous exercise when the joint tendon is pulled or the knee is cold stimulation, there will be knee bending feel tendon tugging performance, usually should pay more attention to rest, local hot compresses, can be gradually relieved. 2. Popliteal tendonitis: aseptic inflammation often caused by chronic exercise or excessive strain, can occur when the knee joint activities, tendon pulling pain. 3. Osteoarthritis of the knee: when osteoarthritis is severe, it can involve the cartilage surface of the knee and the surrounding soft tissues, resulting in limited knee activities, and there may be a tendon tugging sensation and pain when the knee is bent. 4. Popliteal fossa disease: If there is popliteal cyst or popliteal bursitis, the feeling of tendon pulling pain when bending the knee can also occur. The feeling of tendon pulling when bending the knee may also be related to other reasons, it is recommended to consult a doctor in time to clarify the cause of the disease, and standardized treatment under the guidance of the doctor.