Avulsion injury

An injury in which tissue is forcibly torn from its normal attachment. It can involve skin, tendons, nerves, teeth, or other structures.

Shear stress: A force per unit area acting parallel to a surface, tending to make adjacent layers slide past one another. Tangential forces can separate skin and underlying tissue in degloving avulsions.
Skin grafting: A surgical procedure that transfers skin to cover a wound or skin defect. Grafting can cover avulsion wounds when the skin cannot be reattached or the wound cannot close directly.
Fingertip avulsion: A traumatic loss or tearing of skin and soft tissue from the end of a finger. It illustrates how small-area tissue loss can still affect sensation, nail growth, and hand function.
Laceration: A wound caused by tearing of soft tissue, usually with irregular edges. A laceration tears tissue but does not necessarily pull it away from its normal attachment.
Degloving injury: A traumatic injury in which skin and subcutaneous tissue separate from deeper structures, sometimes over a large area. It is an extensive form of soft-tissue avulsion caused by separation along tissue planes.
Tendon repair: Surgical or nonsurgical treatment that restores continuity and function to a damaged tendon. A tendon avulsion may require reattachment to bone or repair of the torn tendon.
Scalp avulsion: A traumatic separation of scalp tissue from the skull, ranging from partial to near-total loss. Its extensive bleeding and possible tissue loss make it a distinct emergency pattern.
Abrasion: A superficial wound caused by friction that removes or damages the outer layers of skin. An abrasion scrapes the surface rather than forcibly detaching a tissue structure.
Open wound: A break in the skin or other body surface that exposes underlying tissue. Many avulsions create open wounds, though avulsion can also affect internal attachments.
Nerve repair: Treatment that reconnects or reconstructs a damaged peripheral nerve to support functional recovery. Nerve tissue torn from its attachment may need reconstruction, with recovery depending on injury severity.

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Hand injuriesBroader topic: Avulsion can strip skin or detach tendons and other structures.