Objective To investigate the treatment principle of patellar fracture of patellar talon in characteristicbionechanics of patellar and its fracture. Methods 24 cases patar fracture, among them, 17 male and 7 female, the ageaveraged 36.4 years old, 15 left and 9 right, 18 traverse fracture, 1 upper pole fracture and 3 lower pole fracture, were hadtreated with patellar talon in 48 hours. Begin dirigation after three days. Results The follow - up period were 5 months to 30months with average of 14 months. The knees angle of flexing had reached more than 90° for 23 cases after 14 days. All patientswere evaluated with the criteria of LU Yupu's standard. The recovery of knee joint function was excellent in 20 cases, good in3, fair in 1. Excellent and good results were reached in 95.8% of the patients. Conclusion The treatment of patellar fracturewith patellar talon conforms to biomechanics regulation. It has the advantage of simple manipulation,rigid fixation,and effectivesatisfaction.