Introduction to Trauma X-ray
Dislocation injury

Dislocation is an injury resulting in loss of anatomical congruence of bones at a joint. Joint dislocations are described in terms of the position of the distal bone in relation to the proximal bone. This means that distal bones can dislocate from proximal bones, but not vice versa.

Subluxation is a term which may be used to describe incomplete dislocation.

Fracture-dislocation

A fracture combined with a dislocation is called a fracture-dislocation.

Diastasis

Diastasis is a term used to describe the separation of 2 normally adjacent bone parts, either at a ligamentous joint, or at a growth plate.