| Title |
Sensitivity analysis as a verification tool for annulus fibrosus material modeling in finite element studies of lumbar disc degeneration |
| Authors |
Ardatov, Oleg ; Fernandes, Sofia Rita ; Kilikevičius, Artūras ; Alekna, Vidmantas |
| Full Text |
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| Is Part of |
4th International Conference on Nonlinear Solid Mechanics, ICoNSoM 2026, 11−18 June 2026, Alghero, Italy: Book of Abstracts.. Alghero : Università degli Studi dell'Aquila. 2026, p. 91-92 |
| Keywords [eng] |
annulus fibrosus ; degenerative spinal diseases ; finite element method ; intervertebral discs ; nucleus pulposus ; numerical modeling ; spinal biomechanics |
| Abstract [eng] |
Finite element (FE) modeling is widely used to investigate the biomechanics of lumbar intervertebral disc degeneration; however, the predictive reliability of such models remains strongly dependent on material assumptions, particularly for the annulus fibrosus. Due to the absence of standardized experimental benchmarks and the inherent limitations of biological tissue testing, direct validation of disc material models is often infeasible. In this context, sensitivity analysis provides a critical alternative framework for assessing model robustness, parameter influence, and internal consistency. The present study extends previous investigations of degeneration-dependent loading strategies by focusing on the sensitivity of nucleus pulposus mechanical response to different constitutive descriptions of the annulus fibrosus. |
| Published |
Alghero : Università degli Studi dell'Aquila |
| Type |
Conference paper |
| Language |
English |
| Publication date |
2026 |
