AI Article Synopsis
- - The study aimed to create and analyze a personalized model for screw fixation of the proximal clavicle using finite element analysis tools like Mimics, Hypermesh, and Abaqus.
- - A 250 N load was applied to test the model under various conditions, revealing that maximum displacement primarily occurred at the distal end of the clavicle and highlighting how different fracture scenarios affected stability.
- - Mises stress distribution analysis indicated that titanium alloy plates and screws experienced significant stress under load, but the stress on the clavicle itself was minimal, with the highest stresses observed at specific screw hole locations.
Article Abstract
Objective: To explore establishment and finite element analysis of personalized proximal clavicular anatomical plate screw fixation model.
Methods: A 40-year-old male healthy volunteer was selected and the finite element analysis modules of 3D reconstruction software Mimics 15.01, Hypermesh 2019 and Abaqus 2020 were used. The finite element model of anatomic plate at the proximal clavicle was established, and a vertical load of 250 N was applied to the distal end of long axis of clavicle about 15 mm, then the overall structure, plate and screw displacement cloud image, Mises stress distribution were observed.
Results: The displacement distribution of the overall structure shows the maximum displacement was distributed on the distal clavicle. Under the four conditions of normal upper limb weight, longitudinal clavicle fracture, oblique fracture and shoulder impact violence during fall, longitudinal clavicle fracture and oblique fracture, the maximum displacement were 1.04 mm, 1.03 mm, 1.35 mm and 1.33 mm, respectively. The displacement cloud map of titanium alloy steel plate showed the largest displacement was distributed near the distal clavicular bone, and the maximum displacement were 0.89 mm, 0.88 mm, 1.10 mm and 1.09 mm, respectively. The displacement cloud map of titanium alloy screw showed the largest displacement was distributed at the root of the distal screw, and the maximum displacement were 0.88 mm, 0.87 mm, 1.08 mm and 1.06 mm, respectively. Mises stress distribution showed the maximum stress was mainly distributed on titanium alloy plates and screws, and the stress on the clavicle was very small. Mises stress distribution cloud showed the maximum Mises stress was distributed at the second row of screw holes near the clavicle, and the maximum Mises stress were 673.1, 678.1, 648.5, 654.4 MPa, respectively. The maximum stresses of titanium alloy screws were 414.5, 417.4, 415.8 and 419.7 MPa, respectively.
Conclusion: The biomechanical changes of personalized proximal clavicular anatomical plates are demonstrated by using 3D finite element method to provide biomechanical data for personalized proximal clavicular anatomical plates.
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| http://dx.doi.org/10.12200/j.issn.1003-0034.20220970 | DOI Listing |
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