In creep behavior of the intervertebral discs, which discs have greater capacity to change size?

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Multiple Choice

In creep behavior of the intervertebral discs, which discs have greater capacity to change size?

Creep is the time-dependent change in deformation under a constant load, driven by fluid flow and viscoelastic relaxation within the disc. Intervertebral discs contain a hydrated matrix with a fluid reservoir in the nucleus pulposus. When load is applied, fluid is pressurized and slowly exits the disc, allowing the matrix to rearrange and the disc to shorten over time. Larger discs have more fluid to lose and more tissue to deform, so there is a bigger absolute change in height under sustained loading. In other words, the capacity for time-dependent size change scales with disc size, making bigger discs show greater creep.

Creep is the time-dependent change in deformation under a constant load, driven by fluid flow and viscoelastic relaxation within the disc. Intervertebral discs contain a hydrated matrix with a fluid reservoir in the nucleus pulposus. When load is applied, fluid is pressurized and slowly exits the disc, allowing the matrix to rearrange and the disc to shorten over time.

Larger discs have more fluid to lose and more tissue to deform, so there is a bigger absolute change in height under sustained loading. In other words, the capacity for time-dependent size change scales with disc size, making bigger discs show greater creep.

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