Analysis of stress induced by screws in the vertebral fixation system
Acta ortop. bras
; Acta ortop. bras;22(1): 17-20, 2014. graf
Article
en En
| LILACS
| ID: lil-703992
Biblioteca responsable:
BR1.1
ABSTRACT
Objective:
To compare, using photoelasticity, internal stress produced by USS II type screw with 5.2 and 6.2 mm external diameters, when submitted to three different pullout strengths.Methods:
Two photoelastic models were especially made. The simulation was performed using loads of 1.8, 2.4 e 3.3 kgf.The fringe orders were evaluated around the screws. In all the models analyzed the shear stress were calculated.Results:
Independently of the applied load, the smaller screw showed higher values of shear stress.Conclusion:
According to the analysis performed, we observed that the place of highest stress was in the first thread of the lead, close to the head of the screws. Experimental study. .
Texto completo:
1
Colección:
01-internacional
Base de datos:
LILACS
Idioma:
En
Revista:
Acta ortop. bras
Asunto de la revista:
ORTOPEDIA
Año:
2014
Tipo del documento:
Article
País de afiliación:
Brasil