Northwestern University Feinberg School of Medicine

Orthopedic Teaching

Spine Case 2 Diagnosis

Facet Dislocation


Radiographic signs of unilateral dislocation include:

Bilateral facet dislocations appear as both superior facets lying anterior to the inferior facets, with anterior displacement of the superior vertebral body greater than 50% of the AP diameter of the inferior vertebral body.

Diagnosis can also be made by CT scan.