A Biomechanical Research Into Different Internal Fixations For Tibial Eminence Fracture And Microtreatment

The Affiiated Orthopedics Hospital of Kunming General Hospital of Chengdu Military RegionObjective To design the microtreatment for the fracture of tibial eminence and establish the experimental model of animal.To conduct a biomechanical comparison of different intemal fixation and evaluate the effection of teel wire encircling K-wires for the fracture of tibial eminence.Methods Each four human and pigs fresh knee joints,measuring and conducting their anatomy character.There are forty 2-year-old pigs knee joints established the model of tibial eminence fracture and randomized into four equal groups of four fixation methods:wiring group, saturation group,intramedullary screw group and steel wire encircling K-wires group.The knee joints specimens were fixed at fixation of 90°and subjected to continuous stretch stresses until the fracture was displaced by using the Japanese AG-1 50KN machine and compter and recording the results.Diffent examinations and arthroscopic treatment were done on 43 cases from July 2005 to December 2008.Results Tibial eminence is the main place of cruciate ligament. The knee joint stability provided by the steel wire encircling K-wires is distinctly better than by other three fixation methods.The saturation fixation provides the poorest knee joint stability.There is hardly any difference between wiring fixation and intramedullary screw fixation.The method of steel wire encircling K-wires is simple and firm compared with other methods.The function of knee joint recovered well after surgeon.Conclusions The method of steel wire encircling K-wires is simple and firm compared with other methods,it does not easily result in fracture loaf crashed and is the same with all style of fracture.