What is the main event in the remodeling phase of tissue healing?

• A. Formation of new blood vessels
• B. Restoring functional integrity
• C. Inflammatory response activation
• D. Increased permeability of blood vessels

Answer: (B)

The remodeling phase of tissue healing primarily focuses on restoring functional integrity. During this phase, which can last from weeks to months, the focus shifts from the initial formation of granulation tissue and collagen deposition to the maturation and reorganization of collagen fibers in order to restore strength and function to the tissue. This involves the realignment of collagen fibers along the lines of tensile strength, improving the mechanical properties of the healed tissue.

In addition to collagen remodeling, this phase also includes the decreasing of vascularity as the tissue matures and strengthens, which helps to restore the normal structure and function that allows the tissue to operate effectively in its respective role. This reconstruction is essential for the tissue to regain its original functional capacity, which is the primary hallmark of the remodeling phase.

While other processes like the formation of new blood vessels, inflammatory responses, and changes in vascular permeability are important in earlier phases of healing and play supporting roles, they do not define the remodeling phase as the primary focus is on restoring integrity and functionality to the tissue.