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  • Title: Comparison of a multidimensional cross locking plate versus a locking compression plate for the treatment of femoral shaft nonunion: Finite element analysis.
    Author: Zhang W, Hao M, Chang Z, Wu Y, Tang P, Chen H.
    Journal: Med Eng Phys; 2020 Sep; 83():106-111. PubMed ID: 32507679.
    Abstract:
    The purpose of this study was to explore the advantages and disadvantages of a multi-dimensional cross locking plate (MDC-LP) compared with a locking compression plate (LCP) as the augmentation plate (AP) over an intramedullary nail (IMN) for the treatment of femoral shaft nonunion by using finite element analysis. A finite element model of the femur was developed to analyze the maximum stress, stress distribution, displacement of fixation and nonunion site under increasing axial and torsional loads. Some differences in the stress distribution and stress values on the fixations were observed in the five fixation models. The MDC-LP with eight screw fixation showed the lowest variety of nonunion site displacement under the increasing axial and torsional loads. Models of the MDC-LP were more stable with regard to the bending and torsional forces. The short MDC-LP with eight screw insertion as an augmentation plate over intramedullary nail shows biomechanical advantages compared to the LCP. The MDC-LP may be an appropriate and effective treatment option for femoral shaft nonunion.
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