The indication of cast removal is not that the fracture has completely healed and the fracture line has disappeared, but that the fracture line still exists, but it has gradually blurred and the fracture end can withstand torsional and shear forces. However, this does not mean that the entire weight can be borne, and the purpose of cast removal is not to walk immediately, but to do functional exercises of the joint without weight. After the mobility of the joint is restored, you can gradually walk on the ground, and you can’t bear the weight completely and immediately, you need to go through a period of exercise and healing before you can gradually walk on the ground.