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The term for a soft tissue injury resulting in a flap of torn skin is avulsion. An avulsion occurs when a portion of skin and underlying tissue is forcibly detached from the body, creating a flap that may be partially attached. This type of injury can vary in severity but often involves a significant loss of skin and can expose deeper structures, leading to complications such as infection.

In contrast, an incision refers to a clean cut made with a sharp object, often seen in surgical procedures. An abrasion is a superficial scrape or wearing away of the skin that does not involve the depth of tissue loss associated with avulsions. A laceration describes a tear or irregular cut in the skin, which may or may not produce a flap; however, it does not specifically denote the complete detachment characteristic of an avulsion. Thus, the clear definition and implications of an avulsion solidify its identification in this context.