Abstract
Objective To compare the biomechanical performance of tibial locking multi-way interlocking intramedullary nail (TLMIIN) and five-hole locking plate (LP) in reconstruction of the tibial plateau through finite element analysis. Methods A healthy 45-year-old male volunteer was enrolled for CT scan of his tibia. The image data of healthy human tibia were obtained for construction of three-dimensional models of the tibia using software Mimics10. 01. Tibial plateau fractures of Schatzker types I, Ⅳ, V and Ⅵ were simulated in the tibial models. Fixations with TLMIIN and LP were next simulated respectively in models of each type. The maximum displacement and force conditions were measured using software ANSYS in each model. The results were analyzed. Results TLMIIN led to smaller comprehensive displacement than LP. Except in Schatzker type IV, TLMIIN resulted in smaller maximum stress in Schatzker types I, V and Ⅵthan LP. LP resulted in the largest maximum stress (19. 1 MPa) on medical fracture fragments in fixation of Schatzker type Ⅵ. LP led to more concentrated local distribution of stress on the fracture fragments than TLMIIN. Conclusion In fixation of tibial plateau fractures, the biomechanical performance of TLMIIN is better than five-hole LP. Key words: Tibial fracture; Fracture fixation, internal; Finite element analysis; Bone nails; Bone plates
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