It usually takes about 3 months to return to normal walking after knee replacement. After knee replacement, you need to do rehabilitation exercises under the guidance of your doctor. The day after surgery, you can walk on the ground with the help of a walker. You should not walk too much at the beginning, but gradually. At the same time to strengthen the quadriceps muscle exercise and ankle pump exercise, to prevent muscle atrophy. After the operation, we should also strengthen the knee flexion and extension exercise, generally one month after the operation, the knee flexion reaches more than 90 degrees. By exercising the strength of the lower limbs, the mobility of the joints will be improved, and within three months, walking aids will be needed to assist walking or supporting the crutches, and the crutches will be gradually lost, and normal walking can be resumed in about three months. Therefore, most of the patients can resume normal walking in about 3 months after knee replacement surgery, because the recovery situation is not exactly the same for everyone.