What term describes the changes in tissue after the yield point?

The correct term that describes the changes in tissue after reaching the yield point is plastic changes. When tissue is subjected to stress beyond its yield point, it undergoes permanent deformation, which is characteristic of plastic behavior. This contrasts with elastic changes, where tissue can return to its original shape after the stress is removed. Plastic changes indicate that the tissue has been deformed in such a way that it cannot recover fully, leading to alterations in its structure and function.

For example, in the context of muscle or connective tissue, once the yield point is surpassed, the tissue may develop microtears or changes in its mechanical properties, which can affect its performance and healing process. In clinical scenarios, understanding plastic changes is essential for designing rehabilitation protocols since it highlights the need for cautious progression in loading to avoid exacerbating any permanent damage.