Biomechanical Analysis of Hybrid External Fixation for the Distal Tibial Fractures: A FEM Study
Journal of the Korean Fracture Society
;
: 160-166, 2004.
Article
Dans Coréen
| WPRIM
| ID: wpr-36970
ABSTRACT
PURPOSE:
To analyze the biomechanical effects of different frame configurations of the hybrid external fixators for distal tibial fractures on the frame stiffness and stress distribution with a finite element method (FEM). MATERIALS ANDMETHODS:
Five configurations were simulated Group I two wires with convergence angle of 60degrees, Group II 3rd wire on a bisector axis of the group I. Group III two wires with 30degrees. Group IV 3rd wire on a bisector axis. Group V two wires with 30degree and a half pin on the distal articular fragment. Each group was simulated under compression, torsion, anterior-posterior and lateral-medial bending load. Stiffness, stress and deformation values were calculated.RESULTS:
The overall stiffness was increased by 15~30% with the addition of a third wire, and by 150~400% with a anteromedial half pin on the articular fragment. The half pin decreased the stress level of the frame by about 43% and the deformation of the 5/8 ring by about 30%.CONCLUSION:
The addition of a half pin on the articular fragment is not only a method of increasing the stiffness but also a way of decreasing the stress concentration and the deformation of the frame.
Texte intégral:
Disponible
Indice:
WPRIM (Pacifique occidental)
Sujet Principal:
Axis
/
Fractures du tibia
/
Fixateurs externes
langue:
Coréen
Texte intégral:
Journal of the Korean Fracture Society
Année:
2004
Type:
Article
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