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A Comparative Analysis of Different Treatments for Distal Femur Fractures using the Finite Element Method
Authors:J. Cegoñino  J.M. García Aznar  D. Palanca  B. Seral  F. Seral
Affiliation:1. Aragón Institute of Engineering Research , University of Zaragoza , María de Luna, 3.50018, Zaragoza, Spain;2. Department of Surgery and Traumatology, Faculty of Medicine , University of Zaragoza, Ciudad Universitaria. , 50010, Zaragoza, Spain
Abstract:
The main objective of this work is the evaluation, by means of the finite element method (FEM) of the mechanical stability and long-term microstructural modifications in bone induced to three different kinds of fractures of the distal femur by three types of implants: the Condyle Plate, the less invasive stabilization system plate (LISS) and the distal femur nail (DFN). The displacement and the stress distributions both in bone and implants and the internal bone remodelling process after fracture and fixation are obtained and analysed by computational simulation. The main conclusions of this work are that distal femoral fractures can be treated correctly with the Condyle Plate, the LISS plate and the DFN. The stresses both in LISS and DFN implant are high especially around the screws. When respect to remodelling, the LISS produces an important resorption in the fractured region, while the other two implants do not strongly modify bone tissue microstructure.
Keywords:Internal bone remodelling  Finite element simulation  Distal femur fractures  Distal femur nail  Condyle plate  LISS plate
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