1-2 weeks after surgery
(1) Brace braking and weight-bearing: the brace must be locked in the fully extended position at rest, and under the protection of full extension of the brace, partial to full weight-bearing can be performed with double crutches according to the tolerance.
(2) Isometric contraction of quadriceps muscle: the patient takes a supine position, both lower limbs are straight, toes hooked upward, tense the affected anterior thigh muscle, then naturally relax and tense again, pay attention to the knee joint in the straight position during the exercise. Two times a day, 15 minutes each time.
(3) N cord muscle isometric contraction: straighten the affected limb, force the heel to press the bed to make the posterior thigh muscle contraction, 2 times a day, 15 minutes each time.
(4) Patella inward pushing activity: completely straighten the knee joint, use the ipsilateral thumb on the outer edge of the patella, push the patella medially to the maximum and then release, repeat the exercise. Perform this exercise twice daily for 15 minutes each time.
3-4 weeks after surgery
(1) Brace braking and weight bearing: it must be locked in the fully extended position at rest, and can be fully weight-bearing with double crutches under the protection of the brace in full extension.
(2) Straight leg elevation training: Patients are placed in supine position with knee extension brace fixed, and lower limbs are elevated to 30°-45°, maintained for 10 seconds and then lowered. Twice daily for 15 minutes each time.
(3) N cord muscle resistance contraction: prone position, knee straightened, sandbag tied above the ankle joint, flexion of the knee joint.
(4) Heel lift training: standing position, knee straight, lift the heel and land on the toes.
(5) Knee passive extension and flexion mobility training: increase knee flexion mobility to at least 90° twice a day for 30 minutes each time.
5-8 weeks after surgery
(1) Brace braking and weight-bearing: the knee must be locked in the 10° flexion position at rest, with a brace in the 10° flexion position for protection and full weight-bearing.
(2) Straight leg elevation training: The patient is placed in the supine position with the knee straightened and the brace fixed, and the lower limb is elevated to 30°-45°, maintained for 10 seconds and then lowered. Repeat. Twice daily for 15 minutes each time.
(3) Half-squat training: Wear a brace and move in a half-squat at 10°-45°, twice daily for 15 minutes each time.
(4) Knee passive extension and flexion mobility training: increase knee flexion mobility to at least 135° twice a day for 30 minutes each time.
9-12 weeks after surgery
(1) Brace braking and weighted walking: remove the brace, but avoid knee hyperextension during walking.
(2) Half-squat training: Half-squat at 10°-45° with brace, twice a day for 15 minutes.
(3) Knee passive extension and flexion mobility training: daily knee flexion activities up to at least 135°, twice daily for 30 minutes each time.
(4) Flexibility training: lateral stepping steps, 2 times a day for 15 minutes each time.
13 weeks-6 months after surgery
(1) Half-squat training: half-squatting at 10°-45° with a brace, twice a day for 15 minutes.
(2) Flexibility training: jogging forward at a uniform speed twice a day for 30 minutes each time.
7 months – 12 months after surgery
Flexibility training: lateral running, 2 times a day, 15 minutes each time; backward running, 2 times a day, 15 minutes each time; forward variable speed running, 2 times a day, 15 minutes each time.