Ruptured capsular ligaments shown in orange

 

Classification Description Notes
Joint capsule injury Widened joint space, with or without subluxation May be due to axial load, flexion or extension
Perched facets Subtotal dislocation Hyperflexion
Locked facets Complete dislocation Hyperflexion
Unilateral facet dislocation Unilateral dislocation Flexion-rotation