Short Answer 
Secondary intention is a wound healing method suitable for wounds that cannot be closed easily, allowing for natural healing and reducing infection risks. The healing occurs through granulation tissue formation, which takes longer than primary closure methods. For severe cases with significant tissue loss, skin grafts may be needed to assist the healing process.
Understanding Secondary Intention
Secondary intention is a wound healing method recommended for wounds that are difficult to close due to their edges being far apart or when infection is a concern. This method allows wounds to heal naturally, reducing the risk of infection and complications by encouraging drainage. It is particularly beneficial in cases where primary closure methods, like sutures or staples, are not possible.
Process of Healing
In this method, wounds heal by granulation tissue filling in from the bottom up and edges coming together gradually. This involves the body working to regenerate new tissue, which can take a longer time than primary healing. The natural healing process significantly reduces the risk of trapping infection within the wound, allowing for a healthier recovery.
When Skin Grafts Are Necessary
For severe wounds where there is extensive tissue loss, simple secondary intention may not be sufficient. In such instances, skin grafts may be required. These grafts involve taking skin from another part of the patient’s body and transplanting it onto the wound area to enhance closure and support healing. It is crucial to assess the wound to determine if this surgical intervention is necessary for optimal recovery.