What is secondary closure in wound healing?

Secondary closure refers to a wound healing process where a wound is left open and gradually closes on its own over time, rather than being stitched or closed immediately. This method is often employed in cases where the risk of infection is high or when the wound contains a large amount of tissue loss. By allowing the wound to heal from the inside out, the body can form new tissue and epithelial cover more effectively, reducing the risk of complications.

This process is critical in certain types of injuries, such as those contaminated by dirt or debris, as immediate closure may trap bacteria and increase the risk of infection. Instead, the wound is cleaned and monitored, allowing natural healing processes to occur at their pace. Such an approach also facilitates drainage of any potential contaminants, further promoting healing.