IMPACT DAMAGE TO THE FIBULA IN THE LOWER LIMB DEFORMATION UNDER EXTERNAL LOADS

Authors

  • М. С. Шидловський National Technical University of Ukraine «Kyiv Polytechnic Institute», Kyiv, Ukraine
  • Ю. М. Літун SI «The Institute of Traumatology and Orthopaedics of the National Academy of Medical Sciences of Ukraine», Kyiv,
  • Д. Ю. Шпак National Technical University of Ukraine «Kyiv Polytechnic Institute», Kyiv,

DOI:

https://doi.org/10.20535/2305-9001.2014.70.35346

Keywords:

Experimental biomechanics, fibula, “shin-foot” complex, stiffness, static and cyclic loadings

Abstract

Purpose. Based on experimental studies of biomechanical characteristics of lower limb under axial (static and cyclic) loads determine the effect of the level and nature of damage fibula on stability and overall stiffness of the “shin-foot” complex in general.

Design/methodology/approach. Using 8 fresh-frozen lower limbs examples (“shin-foot” complex) and universal examining machine TIRAtest-2151 we studied axial static and cyclic loadings of ankle at changes of foot’s position (neutral, dorsal extension, plantar flexion, inversion, eversion) and modeled fibula injuries (osteotomy and resection of middle and lower thirds thereof), tibia bone is intact. Software control testing machine TIRA-test reproduces the cyclic loading of samples while maintaining the specified minimum and maximum values of power during certain periods of time. With this program performed cyclic loading and unloading cycled between two given values force from 100 to 800 N with the number of cycles to 50.

Findings. 1. The modeled lower and middle third of fibula injures, do not cause critical decrease of “shin-foot” complex load bearing capacity. 2. Deformation under cyclic loads more sensitive to the state of the “shin-foot” complex than in single loads. This property should be used in biomechanics in the development of programs for evaluating the quality of fixation of fractures

Author Biographies

М. С. Шидловський, National Technical University of Ukraine «Kyiv Polytechnic Institute», Kyiv

к.т.н., доц.

Ю. М. Літун, SI «The Institute of Traumatology and Orthopaedics of the National Academy of Medical Sciences of Ukraine», Kyiv

к.м.н., хірург

Д. Ю. Шпак, National Technical University of Ukraine «Kyiv Polytechnic Institute», Kyiv

к.т.н., доц.

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Published

2014-12-23

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