Which type of wound is characterized as unclean with jagged edges?

A laceration is characterized as a wound that occurs when the skin or tissue is torn, oftentimes resulting in jagged edges. This type of wound is often associated with uncleanliness due to the nature of how it is inflicted, such as through accidents or trauma involving blunt objects or falls. The irregular edges of a laceration can make it more prone to infection, as they may trap debris and bacteria within the wound.

In contrast, a contusion refers to bruising and does not involve an open wound at all. An incision is a clean, surgical cut made with a sharp instrument, resulting in smooth edges rather than jagged ones. An avulsion occurs when a portion of skin is forcibly detached, which may also have a cleaner appearance depending on the nature of the injury. However, the defining feature of a laceration is its unclean, jagged nature, highlighting its distinction among other types of wounds.