Post-operative exercises are important for full recovery after knee surgery. Early exercises include quadriceps sets, straight leg raises, ankle pumps, and knee bending while supported in bed or a chair. Patients should also walk short distances with crutches or a walker soon after surgery. As strength returns, exercises can include stair climbing, resistance training, cycling, and more advanced leg exercises. Proper form and gradually increasing activity over several months is key to regaining knee mobility and strength after surgery.