Question

A(n) ___________ is a cut in which a portion of the skin or other soft tissue is partly or completely torn away, exposing fat or muscle.

Answer 1

The answer for the above question is avulsion. 
Alvusions is a serious soft tissue injury, happens when a portion of the skin and sometimes other soft tissue is partially or completely torn away, often damages deeper tissues causing significant bleeding, sometimes a violent force may completely tear away a body part which is known as amputation.

Answer 2

An avulsion is a cut in which a portion of the skin or other soft tissue is partly or completely torn away, exposing fat or muscle.

In terms of medicine, an avulsion is an injury in which a body structure is torn off by either trauma or surgery. It takes place when when a tendon or ligament that is joined to the bone pulls a piece of the fractured bone off. The sort of fractures are caused by trauma.

The symptoms of an avulsion fracture may be:

intense and sudden pain where the trauma occurred

swelling

bruising

trouble moving the bone or joint

pain in an attempt to move