Moderate weight-bearing walking on the ground is usually possible after 3 days, or 72 hours, following the removal of the patella nail. Because the nail has just been removed, the fracture will be stimulated by compression to promote further growth. Therefore, although you can go to the ground at this time, you should not stand or move for a long time, and you need to rest in time. After removal of the patellar nail, avoid excessive flexion of the knee joint, squatting, and the injured leg may have to be in the straight position when sitting in the toilet. Excessive flexion can cause the skin at the site of the nail removal to reopen, and excessive flexion can lead to re-injury of the patella after the nail removal. Therefore, after 3 days, you can walk, bend and move around, but in a moderate and appropriate amount, which is an important requirement for patellar movement after the removal of the steel nail.