Wound remodeling

Wound remodeling

During remodeling, no net increase in collagen occurs but wound tensile strength increases greatly. Why?

Initial wound healing is notable for production of large amounts of randomly oriented collagen. During remodeling, this collagen becomes cross-linked and replaced with more organized collagen that is better arranged to resist mechanical stress. Like raw wool being woven into strong yarn, the remodeled collagen is compacted into fibers that are many times stronger than random collagen fibrils. However, the final strength of the new collagen never reaches the strength of uninjured collagen.

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