The methods of lower limb rehabilitation training include static exercises, joint activities, and lower limb muscle resistance training, etc., as follows: First, static exercises: lower limb muscles are kept contracted and stretched 500-1000 times a day, but do not move the joints. It is suitable for early postoperative training, which can accelerate blood circulation, eliminate swelling and prevent deep vein thrombosis. Third, lower limb muscle resistance training: after the general pain and swelling symptoms are relieved, patients can gradually resume resistance training, using elastic bands for resistance and leg muscle contraction exercises, which can enhance leg muscle strength and improve leg muscle shape, so that leg muscle weight-bearing function can be recovered as soon as possible.