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    Does Annulus Fibrosus Lamellar Adhesion Testing Require Preconditioning?

    Source: Journal of Biomechanical Engineering:;2025:;volume( 147 ):;issue: 002::page 24502-1
    Author:
    Sinopoli, Sabrina I.
    ,
    Whittal, Mitchel C.
    ,
    Briar, K. Josh
    ,
    Gregory, Diane E.
    DOI: 10.1115/1.4067399
    Publisher: The American Society of Mechanical Engineers (ASME)
    Abstract: The interlamellar matrix (ILM), located between the annular layers of the intervertebral disc (IVD), is an adhesive component which acts to resist delamination. Investigating the mechanical properties of the ILM can provide us with valuable information regarding risk of disc injury; however given its viscoelastic nature, it may be necessary to conduct preconditioning on tissue samples before measuring these ILM properties. Therefore, the aim of this study was to optimize mechanical testing protocols of the ILM by examining the effect of preconditioning on stiffness and strength of this adhesive matrix. Eighty-eight annular samples were dissected from 22 porcine cervical discs and randomized into one of four testing conditions consisting of ten cycles of 15% strain followed by a 180 deg adhesive peel test. The four testing groups employed a different strain rate for the ten cycles of preconditioning: 0.01 mm/s (n = 23); 0.1 mm/s (n = 26); 1 mm/s (n = 23); and no preconditioning employed (n = 16). Samples preconditioned at 0.01 mm/s were significantly less stiff than those that had not received preconditioning (p = 0.014). No other results were found to be statistically significant. Given the lack of differences observed in this study, preconditioning is likely not necessary prior to conducting a 180 deg peel test. However, if preconditioning is employed, the findings from this study suggest avoiding preconditioning conducted at very slow rates (i.e., 0.01 mm/s) as the long testing time may negatively affect the tissue.
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      Does Annulus Fibrosus Lamellar Adhesion Testing Require Preconditioning?

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    contributor authorSinopoli, Sabrina I.
    contributor authorWhittal, Mitchel C.
    contributor authorBriar, K. Josh
    contributor authorGregory, Diane E.
    date accessioned2025-04-21T10:17:04Z
    date available2025-04-21T10:17:04Z
    date copyright1/3/2025 12:00:00 AM
    date issued2025
    identifier issn0148-0731
    identifier otherbio_147_02_024502.pdf
    identifier urihttp://yetl.yabesh.ir/yetl1/handle/yetl/4305867
    description abstractThe interlamellar matrix (ILM), located between the annular layers of the intervertebral disc (IVD), is an adhesive component which acts to resist delamination. Investigating the mechanical properties of the ILM can provide us with valuable information regarding risk of disc injury; however given its viscoelastic nature, it may be necessary to conduct preconditioning on tissue samples before measuring these ILM properties. Therefore, the aim of this study was to optimize mechanical testing protocols of the ILM by examining the effect of preconditioning on stiffness and strength of this adhesive matrix. Eighty-eight annular samples were dissected from 22 porcine cervical discs and randomized into one of four testing conditions consisting of ten cycles of 15% strain followed by a 180 deg adhesive peel test. The four testing groups employed a different strain rate for the ten cycles of preconditioning: 0.01 mm/s (n = 23); 0.1 mm/s (n = 26); 1 mm/s (n = 23); and no preconditioning employed (n = 16). Samples preconditioned at 0.01 mm/s were significantly less stiff than those that had not received preconditioning (p = 0.014). No other results were found to be statistically significant. Given the lack of differences observed in this study, preconditioning is likely not necessary prior to conducting a 180 deg peel test. However, if preconditioning is employed, the findings from this study suggest avoiding preconditioning conducted at very slow rates (i.e., 0.01 mm/s) as the long testing time may negatively affect the tissue.
    publisherThe American Society of Mechanical Engineers (ASME)
    titleDoes Annulus Fibrosus Lamellar Adhesion Testing Require Preconditioning?
    typeJournal Paper
    journal volume147
    journal issue2
    journal titleJournal of Biomechanical Engineering
    identifier doi10.1115/1.4067399
    journal fristpage24502-1
    journal lastpage24502-4
    page4
    treeJournal of Biomechanical Engineering:;2025:;volume( 147 ):;issue: 002
    contenttypeFulltext
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