The external splint can be removed and the necessary functional exercises can be performed more than 8-12 weeks after the fracture. According to the three-stage healing theory of Chinese medicine for fractures, the first stage is the initial healing period of bone, which is 2-4 weeks, when the fracture end is just wrapped with fresh granulation and can form a soft connection. The second stage is the jointing period, which is 4-8 weeks, when the fracture end has partial bone scab formation, but it is not very strong yet and needs to continue splinting. The third stage is the period of bone strengthening, which is more than 8-12 weeks, or about 100 days after the fracture, when the bone scabs are formed in large quantities and are stronger, so it is recommended to fix the splint for more than 8-12 weeks and then remove it for functional exercise to get better treatment effect.