Journal ArticleDOI
Application of a new calibration method for a three-dimensional finite element model of a human lumbar annulus fibrosus.
Hendrik Schmidt,Frank Heuer,Ulrich Simon,Annette Kettler,Antonius Rohlmann,Lutz Claes,Hans-Joachim Wilke +6 more
TLDR
A method was developed for calibrating the two-composite structure of the annulus fibrosus, the ground substance and collagen fibers to fulfil the required range of motion obtained from in vitro results within an accuracy of 99%.About:
This article is published in Clinical Biomechanics.The article was published on 2006-05-01. It has received 320 citations till now. The article focuses on the topics: Bending moment & Finite element method.read more
Citations
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Journal ArticleDOI
Intradiscal pressure, shear strain, and fiber strain in the intervertebral disc under combined loading.
TL;DR: Combined moments seem to lead to higher stresses in the disc, especially posterolaterally, which might be more susceptible to disc failure and prolapses.
Journal ArticleDOI
Application of a calibration method provides more realistic results for a finite element model of a lumbar spinal segment.
TL;DR: Predictability and accuracy of the calibrated and non-calibrated finite element model of a lumbar spinal segment for different clinical defects were evaluated and compared.
Journal ArticleDOI
Finite element analysis of the spine: Towards a framework of verification, validation and sensitivity analysis
Alison C. Jones,Ruth K. Wilcox +1 more
TL;DR: This review examines the methods used in the development of spinal finite element models with a view to a standardised framework of verification, validation and sensitivity analysis, taking a step towards more robust spinal modelling procedures, promoting acceptance from the wider biomechanics community.
Journal ArticleDOI
Challenges and strategies in the repair of ruptured annulus fibrosus.
Clare Canal Guterl,Eugene Y. See,Sébastien Blanquer,Abhay Pandit,Stephen J. Ferguson,Lorin Michael Benneker,Dirk W. Grijpma,Daisuke Sakai,David Eglin,Mauro Alini,James C. Iatridis,Sibylle Grad +11 more
TL;DR: It is highlighted that an interdisciplinary approach is necessary for successful development of new clinical methods for annulus fibrosus repair and will benefit from a close collaboration between research groups with expertise in all areas addressed in this review.
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The risk of disc prolapses with complex loading in different degrees of disc degeneration – A finite element analysis
TL;DR: The results support how specifically changes associated with disc degeneration might contribute to risk of prolapse by finding load combinations that would lead to the highest internal stresses in a healthy and in degenerated discs.
References
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Journal ArticleDOI
Verification, Validation, and Confirmation of Numerical Models in the Earth Sciences
TL;DR: Verification and validation of numerical models of natural systems is impossible because natural systems are never closed and because model results are always nonunique.
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Testing criteria for spinal implants: recommendations for the standardization of in vitro stability testing of spinal implants
TL;DR: Recommendation is that new implants and new surgical approaches should be tested in vitro for primary stability in standardized laboratory tests in order to decide the most appropriate approach before being accepted for clinical use.
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Investigation of the laminate structure of lumbar disc anulus fibrosus.
Fran Oise Marchand,A. M. Ahmed +1 more
TL;DR: The structure of the lumbar disc anulus fibrosus was investigated using a layer-by-layer peeling technique and microscopic examination of various cut surfaces to identify mechanisms of layer interruption at local laminate irregularities.
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Hierarchical structure of the intervertebral disc.
TL;DR: A hierarchical model of the intervertebral disc has been developed that incorporates morphological gradients that include lamellae in the lateral and posterior aspects of the disc and collagen fibers in the anterior annulus fibrosus.
Journal ArticleDOI
Human lumbar vertebrae. Quantitative three-dimensional anatomy
Manohar M. Panjabi,Vijay K. Goel,Thomas R. Oxland,Koichiro Takata,Joanne Duranceau,Martin H. Krag,Mark A. Price +6 more
TL;DR: This study details the quantitative three-dimensional surface anatomy of human lumbar vertebrae based on a study of 60 vertebraes to provide a better understanding of the spine, and allows for a more precise clinical diagnosis and surgical management of spinal problems.