Patella fracture more than two months lifting leg swelling pain may be caused by muscle ligament contracture. Fracture of patella more than two months to lift the leg swelling pain may be due to long-term cast and other fixed braking, resulting in contracture of the knee joint muscles, ligaments, when lifting the leg activities pull contracture of the muscles, ligaments and swelling phenomenon. Generally, it is necessary to carry out the necessary functional exercises under the guidance of the doctor, such as flexion and extension of the knee joint. Patella fracture for more than two months has not yet fully recovered, functional exercise should avoid excessive and affect the recovery. Patella fracture more than two months to lift the leg pain should be timely follow-up, the doctor according to the symptoms, signs and auxiliary examination to determine the specific cause, for the cause of the correct treatment.