Knee fracture generally refers to patellar fracture, and the treatment methods of bending knee medial pain after patellar fracture are mainly conservative treatment, surgical treatment and rehabilitation training. 1. Conservative treatment: it is suitable for patients with light injury and no displacement of patella, the affected limb should be braked and rested, and the plaster or brace should be fixed externally for 4~6 weeks, and non-steroidal drugs such as ibuprofen and celecoxib can be taken orally to relieve the pain according to the doctor’s instruction. 2. Surgery: For patients with severe knee injury, patellar displacement or other complications, surgery can be adopted. 3. Rehabilitation training: It is recommended to actively carry out rehabilitation training under the guidance of the doctor to restore the muscle contraction strength of the affected limb and the activity of the joint capsule as soon as possible without affecting the immobilization, so as to promote the blood circulation, reduce the muscle atrophy, and prevent the joint from sticking together. Patients with medial knee pain in the bent knee should actively cooperate with the doctor, choose the appropriate treatment plan according to the condition, actively rehabilitative training, and regular review.