You may have a knee contusion if you experience knee trauma that results in pain, swelling, and skin discoloration. This injury typically heals on its own and doesn’t require surgery. A contusion is ...

The medical term for a bruise is a contusion. Vary rarely, a large bruise can cause bleeding that is difficult to stop. A small contusion on a persons arm or knee, however, is unlikely to be serious.

Contusions, or bruises, happen when the body is hit hard enough to damage the skin and underlying tissue, like muscle and blood vessels. Contusions typically don’t break the skin. Thigh contusions, ...