Which phase of healing involves tissue repair and regeneration?

The phase of healing that specifically involves tissue repair and regeneration is the fibroblastic repair phase. During this phase, fibroblasts play a crucial role by producing collagen and extracellular matrix components that facilitate the healing process. This is when the tissue begins to fill in the damaged area, leading to the formation of granulation tissue. This newly formed tissue serves as a scaffold for further healing and eventual regeneration of the injured area.

The inflammatory response phase occurs first and is characterized by the body's immediate reaction to injury, including swelling and the influx of immune cells to manage potential infection. The maturation-remodeling phase follows the fibroblastic repair phase and focuses on the remodeling of the repaired tissue, enhancing its strength and flexibility over time.

The neuropraxia phase is not a recognized phase of healing but rather a type of nerve injury characterized by temporary loss of function, which does not directly correlate with tissue repair and regeneration processes. Thus, the fibroblastic repair phase is essential as it directly addresses the repair and regeneration of tissues following an injury.