Biomechanical Stretch
Biomechanical Stretch - Related Videos
04:42
In Vivo Biomechanical Testing of Nerve: A Procedure for Biomechanical Analysis of Brachial Plexus Nerve Injury in a Neonatal Pig Model
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2025
In this video, we demonstrate the biomechanical testing of the brachial plexus nerve in a pig model to measure the threshold tensile strength of the nerve when subjected to stretching. This technique helps in determining the structural and mechanical properties of the nerve.
09:41
Stretching Micropatterned Cells on a PDMS Membrane
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Cited by 6 •
2014
This manuscript presents a technique to apply or release forces on adherent cells or tissues using unidirectional stretching.
11:46
Axon Stretch Growth: The Mechanotransduction of Neuronal Growth
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Cited by 30 •
2011
A unique tissue engineering method was developed to elongate numerous nerve fibers in culture by recapitulating axon stretch growth; a form of nervous system growth whereby nerves elongate in conjunction with growth of the enlarging body.
07:42
Live Cell Imaging during Mechanical Stretch
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Cited by 12 •
2015
A novel imaging protocol was developed using a custom motor-driven mechanical actuator to allow the measurement of real time responses to mechanical strain in live cells. Relevant to mechanobiology, the system can apply strains up to 20% while allowing near real-time imaging with confocal or atomic force microscopy.
15:12
Preparation of Rat Tail Tendons for Biomechanical and Mechanobiological Studies
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Cited by 21 •
2010
This article describes the experimental procedures used to prepare rat tail tendons for biomechanical and mechanobiological studies. Several features of the main steps in preparation are demonstrated, beginning with extraction, cross-sectional area measurement, rinsing and loading into the bioreactor chamber.
FAQs
Stress-strain data show how a specimen responds as it is elongated. The curve can indicate elasticity, stiffness, and viscoelastic behavior, while the loading rate helps reveal whether the response changes with the speed of deformation. In bioengineering, this information distinguishes mechanical performance among tissues, cells, or biomaterials and guides selection of systems for mechanically demanding designs.
Loading rate matters because biological materials can display different mechanical responses when deformation occurs at different speeds. A controlled comparison of rates helps identify rate-dependent behavior within the stress-strain response rather than treating stiffness as a fixed value. This distinction is useful when bioengineers evaluate whether a tissue substitute or biomaterial will remain mechanically appropriate under changing loading conditions.
Cells sense physical deformation and can alter their behavior through mechanotransduction, allowing a mechanical cue to influence biological activity. Under controlled stretch, investigators can examine changes in growth, alignment, and remodeling while relating those outcomes to the imposed mechanical condition. This connects measurements of material behavior with cellular function, bridging mechanical characterization and regenerative bioengineering.
Tissue architecture contributes to mechanical behavior, so specimens with different structural organization may respond differently during elongation. Examining the stress-strain response alongside architecture helps investigators interpret whether observed behavior reflects the material or its organization. This perspective matters when engineered tissues must reproduce both the deformation response and the structured features of biological tissue.
A basic biomechanical stretch study applies a controlled increase in length to a tissue, cell system, or biomaterial and records the resulting mechanical response. Researchers then interpret stress and strain together, considering elasticity, stiffness, viscoelasticity, loading rate, and architecture. When cells are included, the analysis can also compare mechanical exposure with changes in growth, alignment, or remodeling.
Length change and applied force should be controlled or measured consistently so results can be compared across specimens. Loading rate is especially important because it can affect the stress-strain response, while tissue architecture and material type provide additional context. Consistent conditions help bioengineers evaluate performance rather than attribute differences to uncontrolled testing variation.
Within bioengineering, controlled stretch supports several complementary goals: characterizing engineered tissues, evaluating biomaterial performance, modeling physiological loading, and studying cellular responses to mechanical cues. The resulting information can guide regenerative therapies and mechanically functional implants by linking how a construct deforms with how cells behave and how the material may support intended function.