Biomechanical analysis of different fixation methods in the treatment of posteromedial tibial plateau fracture

doi:10.3969/j.issn.2095-4344.2013.26.011

Abstract

Abstract:

BACKGROUND: The treatment of posteromedial tibial plateau fracture is difficult which is prone to have re-displacement, nonunion, fixation failure and joint function movement disorder caused by inappropriate choice of fixation method.
OBJECTIVE: To analyze the biomechanical performance of three different fixation methods for posteromedial tibial plateau fracture.
METHODS: Twenty-seven fresh tibia specimens were made into models of posteromedial tibial plateau fracture. The models were divided into normal group, dual plate fixation group, T-shaped plate fixation group and lag screw fixation group. The stress, load-displacement, stress intensity, stiffness and rotation performance of the three experimental groups were tested.
RESULTS AND CONCLUSION: The load-displacement in the dual plate fixation group was significantly lower than that in the T-shaped plate fixation group and lag screw fixation group, while the axial stiffness, horizontal shear stiffness and torque torsion angle in the dual plate fixation group were larger than those in the T-shaped plate fixation group and lag screw fixation group. The results indicate that biomechanical stability of dual plate fixation for the treatment of posteromedial tibial plateau fracture is better than the other two methods.

Key words: bone and joint implants, Bone and joint biomechanics, tibial fractures, tibial plateau fracture, fixation devices, biomechanics, load-displacement, axial stiffness, horizontal shear stiffness, torsion angle

CLC Number:

R318

Yang Hai-feng, Huang Jun-wu, Zhang Chun-lin. Biomechanical analysis of different fixation methods in the treatment of posteromedial tibial plateau fracture[J]. Chinese Journal of Tissue Engineering Research, doi: 10.3969/j.issn.2095-4344.2013.26.011.

Figures/Tables 1

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