The Stress-Strain Curve EXPLAINED [for Ligaments & Tendons]

The video tutorial explains the stress-strain curve, focusing on its application to tendons and ligaments. It covers the four main regions: toe, elastic, plastic, and failure. The toe region involves collagen fibers unfurling, while the elastic region allows for 100% elastic recoil. The plastic region results in permanent length changes, and the failure point can lead to injury. The tutorial uses analogies like rubber bands and tug of war to illustrate these concepts.

What does the stress-strain curve primarily describe in tendons and ligaments?

• The color of collagen fibers

• The mechanics of collagen fibers

• The temperature of tendons

• The weight of ligaments

What is the primary difference between stress and strain?

• Stress is external force, strain is internal

• Strain is temperature change, stress is color change

• Strain is external force, stress is internal

• Stress is temperature change, strain is color change

In the toe region of the stress-strain curve, what happens to collagen fibers?

• They break

• They unfurl

• They change color

• They shrink

What characterizes the elastic region of the stress-strain curve?

• Permanent deformation

• Elastic recoil

• Color change

• Temperature increase

What happens to collagen fibers in the plastic region of the stress-strain curve?

• They experience permanent length changes

• They change color

• They become more elastic

• They return to their original length

What is the significance of the yield point in the stress-strain curve?

• It marks the end of the elastic region

• It marks the start of the failure point

• It marks the end of the plastic region

• It marks the start of the toe region

Why is the plastic region important in therapeutic settings?

• It allows for color changes

• It enables permanent lengthening of tissues

• It increases temperature

• It decreases elasticity

In which region of the stress-strain curve would you want to be to achieve permanent tissue lengthening?

• Toe region

• Failure point

• Plastic region

• Elastic region

What is the consequence of exceeding the failure point on the stress-strain curve?

• Temperature increase

• Color change

• Rupture and injury

• Increased elasticity

What happens to stress levels when a structure ruptures beyond the failure point?

• Stress levels decrease

• Stress levels fluctuate

• Stress levels increase

• Stress levels remain constant