1. Immediate postoperative period – 2nd postoperative week.
(1) Ultrashort wave therapy to reduce swelling.
(2) Use of straight knee brace for 12 weeks.
(3) 30% weight-bearing with a double crutch until the 6th postoperative week.
(4) Passive knee extension exercises.
(5) Passive knee flexion exercises (CPM): starting on postoperative day 3, passive knee flexion up to 100-110° 2 weeks postoperatively. Wall gliding exercises when the patient is able to obtain 80-90° of knee flexion.
(7) Movement of the patella.
(8) start quadriceps isometric contraction exercises and N cord muscle strength exercises on the 1st postoperative day.
2. Postoperative rehabilitation in the 3rd-6th weeks.
(1) Continue to maintain knee extension and muscle strength exercises.
(2) Mobility exercises: 5 weeks postoperatively, passive knee flexion up to 130°.
(3) Closed chain exercises (e.g. shallow squat, leg press) and straddle training starting at 5 weeks.
3. Postoperative weeks 7-12 rehabilitation.
(1) Passive flexion and extension of the knee at the same angle as the healthy side, and no significant pain or swelling.
(2) The affected limb can walk with full weight bearing.
(3) Gradually return to full squatting exercises with protection.
(4) Begin kneeling exercises and moderate intensity resistance fixed bicycle exercises at 11 weeks.
4. Postoperative rehabilitation from the 13th to the 18th week:
(1) Continue to strengthen quadriceps and N cord muscle strength exercises.
(2) Jogging can be considered when the joint is stable.
(3) Start swimming, but forbid frog swimming in the early stage.