Tibial plateau fracture bending knee pain may be due to traumatic arthritis, knee ligament contracture adhesion, osteophytes and other reasons. 1. Traumatic arthritis: It may be due to the seriousness of tibial plateau fracture, which leads to traumatic arthritis in the knee joint area, and therefore leads to pain when bending the knee. 2. Contracture and adhesion of knee joint ligaments: it may be due to the long time inactivity of the knee joint after the tibial plateau fracture, which causes contracture and adhesion of the ligament tissues around the knee joint, which will lead to pain when bending the knee. 3. Osteonecrosis: It may be due to the more serious trauma to the tissues when the fracture platform fracture surgery is carried out. Later on, it triggers bone necrosis, which leads to changes in the bone joints, thus causing the appearance of osteomalacia. This condition may also lead to pain when bending the knee. If the patient’s pain is severe, he or she should go to the hospital in time for examination to clarify the specific cause of the disease, and then carry out targeted treatment under the guidance of the doctor.