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A scraped knee is an example of an abrasion. Other examples include road rash, raspberries, strawberries, and injuries such as a cheese grater or sandpaper could create. (This answer provided for NATA by the Weber State University Athletic Training Education Program.)

An abrasion means that the surface layers of the skin (epidermis) has been broken. Thin-skinned bony areas (like knees, ankles and elbows) are more prone to abrasions than thicker, more padded areas. The scraped skin of an abrasion can contain particles of dirt.

Abrasions are classified into three types that include linear or scratch abrasions, grazed or brush abrasions, and patterned abrasions.Aug 4, 2021

Abrasion is a process of erosion which occurs when material being transported wears away at a surface over time. It is the process of friction caused by scuffing, scratching, wearing down, marring, and rubbing away of materials. ... Objects transported in waves breaking on coastlines cause abrasion.

There are two common types: two-body and three-body abrasion. Two-body abrasion refers to surfaces that slide across each other where the one (hard) material will dig in and remove some of the other (soft) material. An example of two-body abrasion is using a file to shape a workpiece.Jan 14, 2016

Is this page helpful? Abrasion terms damage in the epidermis of the skin. The abrasion injury is mainly caused due to friction against a rough surface. This results in removing the layer of skin. The abrasion wound may cause swollen, severe pain and sometimes it may lead to infection.

An abrasion occurs when your skin rubs or scrapes against a rough or hard surface. Road rash is an example of an abrasion. There's usually not a lot of bleeding, but the wound needs to be scrubbed and cleaned to avoid infection.

Abrasions are most commonly caused by falling, skidding, or other types of accidents. Many abrasions occur suddenly and without warning, and may not even be noticed until after the injury. Abrasions typically occur on the extremities, exposed arms and legs, when the skin is scratched against a hard or rough surface.

Abrasion Test is the measure of aggregate toughness and abrasion resistance such as crushing, degradation and disintegration. ... The steel plate wheels of animal-driven vehicles also cause significant abrasion of the road surface. Therefore, the aggregates used in road construction must be hard enough to resist abrasion.