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Timing is important to wound healing. Critically, the timing of wound re-epithelialization can decide the outcome of the healing. [11] If the epithelization of tissue over a denuded area is slow, a scar will form over many weeks, or months; [12] [13] If the epithelization of a wounded area is fast, the healing will result in regeneration.
Collagen is one of the body's key natural resources and a component of skin tissue that can benefit all stages of wound healing. [21] When collagen is made available to the wound bed, closure can occur. This avoids wound deterioration and procedures such as amputation.
Scars result from the biological process of wound repair in the skin, as well as in other organs, and tissues of the body. Thus, scarring is a natural part of the healing process. With the exception of very minor lesions , every wound (e.g., after accident , disease , or surgery ) results in some degree of scarring.
PRP is derived from the patient's own blood and may contain growth factors that increase collagen production. [3] It can be applied topically to the entire treatment area during and after collagen induction therapy treatments or injected intradermally to scars. Efficacy of the combined treatments remains in question pending scientific studies ...
Micrograph of keloid. Thick, hyalinised collagen fibres are characteristic of this aberrant healing process. H&E stain. Histologically, keloids are fibrotic tumors characterized by a collection of atypical fibroblasts with excessive deposition of extracellular matrix components, especially collagen, fibronectin, elastin, and proteoglycans ...
A week after the injury, the edges of the wound are pulled together by contraction. Contraction is an important part of the healing process when damage has been extensive, and involves shrinking in size of underlying contractile connective tissue, which brings the wound margins toward one another. [1]
Full-thickness (FT) injuries cause dermal wound healing, which is characterized by maturation (contraction and increased tensile strength), proliferation (collagen synthesis leading to wound closure), and inflammation . FT wounds heal by excision and grafting, contracture, or epithelial ingrowths from the margins. [2]
A hypertrophic scar is a cutaneous condition characterized by deposits of excessive amounts of collagen which gives rise to a raised scar, but not to the degree observed with keloids. [1] Like keloids, they form most often at the sites of pimples, body piercings, cuts and burns. They often contain nerves and blood vessels.