From August 1986 to October 1990, 34 cases of fractures of patella were treated by the self-designed spring Kirschner wire, in which, 25 cases were followed up for an average of 1.5 years. The excellentgood rate reached 88%. In comparing with the traditional method of treatment, it gave more secure fixation for fracture, without the need or only a short time of immobilization needed, short treatment course and satisfactory return of function.