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creep is time dependent, so a load that is applied for a longer time is more effective in causing a change in tissue length than a quickly applied load. question 19 options: true false

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tutorconsortium125

True

Creep is the capacity of fascia and other tissue to lengthen when subjected to a constant tension load resulting in less resistance to a second load application. A progressive deformation occurs over time.

What is Creep ?

                 Creep, or the time-dependent deformation of a structure under load, is an important viscoelastic property of bone that may play a role in the development of permanent vertebral deformity in vivo, leading to clinically visible spinal fractures. Creep properties and their relationships to geometric, microstructural, and material properties in isolated human vertebral bodies have yet to be described. A variety of image-based measures of vertebral bone geometry, bone mass, microarchitecture, and mineralization were examined in multiple regression models in this study to better understand their contribution to creep behaviour. Although further work is needed to identify additional tissue properties to fully describe the portion of variability not explained by these models, these data are expected to help understand mechanisms underlying creep and improve prediction of vertebral deformities that eventually progress to a clinically observable fracture.

              A number of physical properties of viscoelastic tissues help to explain how they elongate when stretched. These are creep, load relaxation, and hysteresis: Creep describes a tissue's ability to elongate over time when subjected to a constant load. For example, if we applied 10 kg of force to our leg to stretch our hamstring, we might be able to get it to 90 degrees before our tissues prevented further movement. If we continued to apply that load, our leg would gradually 'creep' a few degrees over time.

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tutorconsortium127

The given statement is true. The creep is time dependent, so a load that is applied for a longer time is more effective in causing a change in tissue length than a quickly applied load.

What is meant by Creep?

  • An essential viscoelastic property of bone is creep, or the time-dependent distortion of a structure under load, which may contribute to the development of clinically obvious spinal fractures and irreversible vertebral deformity in vivo.
  • It is yet unknown how creep properties relate to geometric, microstructural, and material characteristics in isolated human vertebral bodies. In order to comprehend how different image-based measurements of vertebral bone geometry, bone mass, microarchitecture, and mineralization contribute to creep behavior, multiple regression models were used in this study.
  • The greatest tension in the cylinder is located at the upper surface at bitlength (L/2).
  • The maximum shear stress at any particular place is equal to the algebraic difference between the maximum and minimum stresses, which is half the difference between the radial and hoop stresses.

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