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Numerical and Experimental Analysis of Biomechanical Behavior in Persian Fixation Method for Distal Humerus Fractures

Hakiminejad, Alireza | 2023

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  1. Type of Document: M.Sc. Thesis
  2. Language: Farsi
  3. Document No: 56368 (08)
  4. University: Sharif University of Technology
  5. Department: Mechanical Engineering
  6. Advisor(s): Nourani, Amir; Shahriar Kamrani, Reza
  7. Abstract:
  8. Distal humerus fractures commonly take place in adults with low bone mineral density causing major technical challenges upon orthopedic surgeons. Persian fixation method was introduced as a novel technique to stabilize small fragments in comminuted distal humerus fractures using a set of K-wires and reconstruction plate. The objective of the present study is to measure the stiffness and stability of this technique and analyze the effect of influential parameters with numerical simulation and biomechanical testing on a cadaveric specimen. Furthermore, we were able to propose new method to model plastic deformation of implants in surgery.Validation of the finite element (FE) model was conducted based on results of experiments. Analyzing the influential factors of this technique suggests that changes in diameter and number of K-wires have a similarly significant effect on the construct stiffness while the height of plate had a slight influence. Also, we aimed at measuring the stiffness of three clinically common configurations of Persian fixation method using biomechanical testing in cadaveric humeri in order to compare with Dual-plating method. The obtained results revealed that the Persian fixation method would achieve suitable stability compared to dual-plating technique
  9. Keywords:
  10. Finite Element Method ; Rigidity ; Stability ; Orthopedic Surgery ; Persian Fixation Method ; Biomechanical Testing ; Distal Humerus Fracture ; Fracture Fixation

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