Scrapes knee is a common injury that occurs when the skin is scraped or rubbed against a rough surface. It is usually caused by a fall, contact with a sharp object, or a sports-related accident. The medical term for this type of injury is abrasion. SKINS is an acronym for Superficial Knee Injury and Nerve Sensitivity, which is a condition that can occur after a scrape knee injury. This condition can cause pain, numbness, and tingling in the affected area.