When a fracture of the radial tuberosity is fixed in a cast, the location of fixation is the fracture site and the area around the fracture site, including the radial tuberosity and the lower part of the radial tuberosity and the upper part of the radial tuberosity. The position of the cast is not uniform, but should be decided according to the individual case. The cast should be kept under braking for 24 hours because it needs to be cooled and formed. Patients should not perform functional exercises during the cast period, and should not perform rehabilitation until the cast is removed after recovery. If the rehabilitation training is not effective, the patient may have functional impairment or uncoordinated limbs on both sides. The cast should not be too tight or too loose, too loose can not play a stabilizing role, too tight will impede blood circulation, so too loose or too tight cast is not good for the recovery of the fracture site.