Numerical Prediction of the Mechanical Failure of the Intervertebral Disc under Complex Loading Conditions
AbstractFinite element modeling has been widely used to simulate the mechanical behavior of the intervertebral disc. Previous models have been generally limited to the prediction of the disc behavior under simple loading conditions, thus neglecting its response to complex loads, which may induce its failure. The aim of this study was to generate a finite element model of the ovine lumbar intervertebral disc, in which the annulus was characterized by an anisotropic hyperelastic formulation, and to use it to define which mechanical condition was unsafe for the disc. Based on published in vitro results, numerical analyses under combined flexion, lateral bending, and axial rotation with a magnitude double that of the physiological ones were performed. The simulations showed that flexion was the most unsafe load and an axial tensile stress greater than 10 MPa can cause disc failure. The numerical model here presented can be used to predict the failure of the disc under all loading conditions, which may support indications about the degree of safety of specific motions and daily activities, such as weight lifting. View Full-Text
Scifeed alert for new publicationsNever miss any articles matching your research from any publisher
- Get alerts for new papers matching your research
- Find out the new papers from selected authors
- Updated daily for 49'000+ journals and 6000+ publishers
- Define your Scifeed now
Casaroli, G.; Villa, T.; Bassani, T.; Berger-Roscher, N.; Wilke, H.-J.; Galbusera, F. Numerical Prediction of the Mechanical Failure of the Intervertebral Disc under Complex Loading Conditions. Materials 2017, 10, 31.
Casaroli G, Villa T, Bassani T, Berger-Roscher N, Wilke H-J, Galbusera F. Numerical Prediction of the Mechanical Failure of the Intervertebral Disc under Complex Loading Conditions. Materials. 2017; 10(1):31.Chicago/Turabian Style
Casaroli, Gloria; Villa, Tomaso; Bassani, Tito; Berger-Roscher, Nikolaus; Wilke, Hans-Joachim; Galbusera, Fabio. 2017. "Numerical Prediction of the Mechanical Failure of the Intervertebral Disc under Complex Loading Conditions." Materials 10, no. 1: 31.
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.