A BIOMECHANICAL AND CLINICAL STUDY TO DETERMINE THE OPTIMUM FRAME DESIGN FOR SHEAR PLANE FRACTURES

Shear plane non unions: biomechanical study and clinical application using an all wire Illizarov frame.60 degree osteotomy of plastic tibiae were stabilised using four different Ilizarov frame configurations.Models were loaded and shear displacement measured at the fracture site. The optimum frame design was identified and used in clinical practice.The transfracture locked olive wire frame model offered the least displacement in the experimental model This frame model was used in two patients with shear plane non unions and both healed satisfactorily Both displacements had previously failed to unite with standard frame constructs.Transfracture locked olive wire frame design is useful in the treatment of tibial non unions with shear plane.