Objective:To compare short-term and long-term curative effect of modified double Kirschner wire open reduction and internal fixation (ORIF) and traditional surgery on patients with mallet fingers of avulsion fracture type.Methods:Eighty-five patients with mallet fingers of avulsion fracture type who were admitted to Yongkang Orthopaedic Hospital from January 2016 to October 2018 were enrolled. 45 patients received modified double Kirschner wire ORIF were included in the observation group, while 40 patients who underwent traditional extracting wire fixation were included into control group. The operation time, fracture healing time and complications were recorded. At 3 months after surgery, short-term curative effect was evaluated. After 1-year postoperative follow-up, long-term prognosis was evaluated by finger joint function scoring.Results:The operation time of observation group was shorter than that of control group ( P<0.05). The fracture healing time of observation group was shorter than that of control group ( P<0.05). The good rate of observation group was higher than that of control group (93.33% vs 77.50%) ( P<0.05). In finger joint function score, scores of finger strength, finger flexibility, effects on work and life, and total score in observation group were higher than those in control group ( P<0.05). There was no significant difference in pain degree or appearance satisfaction betwen the two groups ( P>0.05). There was no significant difference in incidence of postoperative complications between the two groups ( P>0.05). Conclusions:The modified double Kirschner wire ORIF for the treatment of avulsion fracture mallet finger has the advantages of simple operation, fast fracture healing and better long-term and short-term curative effect than the traditional wire extraction method.