Surgical scars are areas of fibrous tissue (fibrosis) that replace normal skin after injury such as surgery. A scar results from the biological process of wound repair in the skin and other tissues of the body. Scarring is a natural part of the healing process. With the exception of very minor lesions, every wound results in some degree of scarring. Scar tissue is the same protein (collagen) as the tissue that it replaces, but the fiber composition of the protein is different; instead of a random weaving formation of the collagen fibers found in normal tissue, in fibrosis the collagen cross-links and forms a pronounced alignment in a single direction.
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