Biomechanical analysis of different osteosynthesis configurations in the pin and plate fixation method for distal humerus fractures

Distal humerus fractures commonly occur in adults with low bone mineral density causing major technical challenges for 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 a rec...

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Bibliographic Details
Published in:BMC musculoskeletal disorders 2023-07, Vol.24 (1), p.579-579, Article 579
Main Authors: Hakiminejad, Alireza, Nourani, Amir, Ghias, Narges, Mahmoudi, Alireza, Same, Kaveh, Kamrani, Reza Shahriar, Nabian, Mohammad Hossein
Format: Article
Language:English
Subjects:
Biomechanical Phenomena
Biomechanical testing
Biomechanics
Bone mineral density
Bone Plates
Bone surgery
Cadavers
Clinical outcomes
Design of experiments
Distal humerus fracture
Fracture Fixation, Internal - methods
Fractures
Humans
Humeral Fractures - surgery
Humeral Fractures, Distal
Humerus
Mathematical models
Mechanical loading
Methods
Musculoskeletal diseases
Orthopedics
Osteosynthesis
Persian fixation method
Simulation
Stability
Surgeons
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Summary:Distal humerus fractures commonly occur in adults with low bone mineral density causing major technical challenges for 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 a reconstruction plate. The present study aims to measure this technique's stiffness and stability of this technique and analyze the effect of influential parameters with numerical simulation and biomechanical testing on a cadaveric specimen. Validation of the finite element (FE) model was conducted based on results of experiments. The results indicated that Delta configuration mainly led to a higher stiffness in the case of axial loading and anterior bending compared to L configuration. 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, the diameter of wires was the most effective parameter for implant failure, particularly in the 3-pin construct, which caused a reduction in failure risk by about 60%. The results revealed that the Persian fixation method would achieve suitable stability compared to the dual-plating technique.
ISSN:1471-2474
1471-2474
DOI:10.1186/s12891-023-06709-y