Abstract: Objective　To explore the effect of short-term fixation of two teeth hook plate on avulsion fracture in adolescents with no-closed epiphysis. 　Methods 　From January 2012 to November 2016, 22 cases of fresh avulsion fracture in adolescents with no-closed epiphysis were treated with short-term fixation of two teeth hook plate, of which were 13 males and 9 females, whose age ranged between 10 ~ 15 years old, with a mean of 13.0 years old. For the Salter-Harris type: type I in 8 cases, type II in 10 cases, type III in 3 cases and type IV in one case. For location of fracture type: ulna olecranon in 6 cases, humeral medial epicondyle in 4 cases, humeral lateral epicondyle in 4 cases, humeral greater tuberosity in 2 cases, lateral malleolus in 4 cases and medial malleolus in 2 cases. Early postoperative rehabilitation were all taken. After the fracture healed, the internal fixator was removed timely. All patients were followed up for 12 to 28 months (averaging 18.2 months). The functionary recovery of limb was evaluated based on the upper limb function score (DASH) and Kaikkonen’s ankle injury score respectively.　Results　The incisions healed by first intention. No vascular or nerve injury and infection, no loosening or broken of internal fixator were observed. All the avulsion fractures were smoothly healed without fracture displacement and delayed healing. During the last follow-up, the good rate of functional recovery was 100%, there were no instability of joint, no skeletal dysplasia and no traumatic arthritis.　Conclusions　Short-term fixation of two teeth hook plate has no secondary, iatrogenic injury to the epiphysis or epiphyseal plate, which is indicated for avulsion fracture in adolescents with no-closed epiphysis, but over compression and long-time fixation should be avoided.

Key words:  , Epiphyseal injury, 　Avulsion fracture, 　Internal fixation, 　Hook plate