The fixation methods of avulsion fracture are as follows: 1, external fixation: the avulsion fracture which is not seriously displaced should be externally fixed by plaster and assisted with some anti-inflammatory and analgesic, blood circulation and blood stasis activation, dehydration and swelling reduction medicines, and then gradually take the rehabilitation training of the joint function after the external fixation is taken out; 2, internal fixation: the avulsion fracture which is seriously displaced is expected to affect the joint function significantly in the long term, and it needs to be fixed by the open reset, and the fixation with the internal fixation methods of silk suture fixation, repairing, or with the internal fixation methods of wire anchors, and hollow nails.