Postoperative day 1-2 1.Ankle pump exercises: active ankle dorsiflexion and plantar flexion exercises, slow, hard, full range, as much as possible daily. 2.Quadriceps femoris (anterior thigh muscle) isometric contraction exercises: thigh muscle tensing and relaxation, 500 times/day to promote blood circulation in the lower limbs. 3. Isometric muscle exercises for the muscles around the hip joint to slow down muscle atrophy. 4.Bed rest is the main purpose, elevate the affected limb and put the hip joint in a comfortable position. 5.Walk with the affected limb partially under weight with the help of crutches, the time should not be too long, just complete the necessary daily life such as going to the toilet. The walking time should be controlled, 5-10 minutes/time, 2-3 times/day. Postoperative day 3~7 1. Walk with partial weight on the affected limb with the help of crutches, the time should not be too long, and it is enough to complete the necessary daily life such as going to the toilet. The walking time should be controlled, 5~10 minutes/time, 2~3 times/day. 2. Continue the above exercises. 3. Passive movement of the hip joint: note that this exercise should be performed within the pain-free range as much as possible. 2~4 weeks after surgery 1. Start to walk with full weight on the affected limb with the help of crutches, the time should not be too long, just finish the daily life such as going to the toilet. Do not treat walking as a training project, gradually extend the walking time according to your own situation, so that the hip joint symptoms do not worsen after the activity. 2.Passive activities of the hip joint: pay attention to this exercise should be carried out within the pain-free range as far as possible. 3. Continue the above exercises. 4~6 weeks after surgery 1.Passive activities of the hip joint: carry out activities within the tolerable range and gradually practice until normal. 2.Active activities of the hip joint within the tolerable range, including internal retraction, abduction and internal and external rotation exercises. You can ride a stationary bicycle to practice hip flexibility. 3. Continue the above exercises. 6~8 weeks after surgery Gradually resume normal functional activities of the lower limbs or walking. Caution: Early large-angle joint mobility exercises should be performed once a day, with the aim of improving the angle, and avoid repeated large-angle flexion and extension exercises. Immediately after the mobility exercise, apply ice for 20 minutes. If the joint is usually swollen, painful or hot, ice may be applied every two hours.