Digital Image Correlation (DIC) Assessment of the Non-Linear Response of the Anterior Longitudinal Ligament of the Spine during Flexion and Extension

Autor: Christian Liebsch, Tomaso Villa, Hans-Joachim Wilke, Maria Luisa Ruspi, Luca Cristofolini, Fabio Galbusera, Marco Palanca, Marco Brayda-Bruno, Luigi La Barbera
Přispěvatelé: Ruspi, Maria Luisa, Palanca, Marco, Cristofolini, Luca, Liebsch, Christian, Villa, Tomaso, Brayda-Bruno, Marco, Galbusera, Fabio, Wilke, Hans-Joachim, La Barbera, Luigi
Jazyk: angličtina
Rok vydání: 2020
Předmět:
Strain (injury)
02 engineering and technology
Rotation
lcsh:Technology
Anterior longitudinal ligament
Biomechanical phenomena
Bildgebendes Verfahren
non-linear material properties
anterior longitudinal ligament (all)
in vitro testing
General Materials Science
Biomechanics
digital image correlation (dic)
Longitudinal ligaments
Mathematics
lcsh:QC120-168.85
Orthodontics
0303 health sciences
anterior longitudinal ligament (ALL)
Extension (predicate logic)
021001 nanoscience & nanotechnology
musculoskeletal system
Image processing
Computer-assisted
medicine.anatomical_structure
Wirbelsäule
0210 nano-technology
lcsh:TK1-9971
musculoskeletal diseases
Digital image correlation
digital image correlation (DIC)
Article
Biomechanik
03 medical and health sciences
medicine
ddc:610
lcsh:Microscopy
spine biomechanics
030304 developmental biology
lcsh:QH201-278.5
lcsh:T
Intervertebral disc
medicine.disease
Spine
Vertebra
Moment (mathematics)
lcsh:TA1-2040
lcsh:Descriptive and experimental mechanics
lcsh:Electrical engineering. Electronics. Nuclear engineering
lcsh:Engineering (General). Civil engineering (General)
DDC 610 / Medicine & health
Zdroj: Materials, Vol 13, Iss 2, p 384 (2020)
Materials
Volume 13
Issue 2
ISSN: 1996-1944
Popis: While the non-linear behavior of spine segments has been extensively investigated in the past, the behavior of the Anterior Longitudinal Ligament (ALL) and its contribution during flexion and extension has never been studied considering the spine as a whole. The aims of the present study were to exploit Digital Image Correlation (DIC) to: (I) characterize the strain distribution on the ALL during flexion-extension, (II) compare the strain on specific regions of interest (ROI) of the ALL in front of the vertebra and of the intervertebral disc, (III) analyze the non-linear relationship between the surface strain and the imposed rotation and the resultant moment. Three specimens consisting of 6 functional spinal units (FSUs) were tested in flexion-extension. The full-field strain maps were measured on the surface of the ALL, and the most strained areas were investigated in detail. The DIC-measured strains showed different values of peak strain in correspondence with the vertebra and the disc but the average over the ROIs was of the same order of magnitude. The strain-moment curves showed a non-linear response like the moment-angle curves: in flexion the slope of the strain-moment curve was greater than in extension and with a more abrupt change of slope. To the authors&rsquo
knowledge, this is the first study addressing, by means of a full-field strain measurement, the non-linear contribution of the ALL to spine biomechanics. This study was limited to only three specimens
hence the results must be taken with caution. This information could be used in the future to build more realistic numerical models of the spine.
Databáze: OpenAIRE
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