Jefferson fracture in ankylosing spondylitis
Heavily intoxicated, fall, now stiff neck. Moving all limbs
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Typical pattern of a Jefferson fracture including the anterior and posterior arches but no lateral displacement of the lateral masses as is usual due to an axial load injury ie through the head.
In this case the dens is displaced anteriorly in relation to the tip of the clivus possibly due to the grossly fused remainder of the cervical spine (due to ankylosing spondylitis ) ie this is a flexion/extension injury rather than axial.
- G. Jefferson. Fracture of the atlas vertebra: report of four cases, and a review of those previously recorded. British Journal of Surgery, London, 1920, 7: 407-22.
- Hunter TB, Peltier LF, Lund PJ. Radiologic history exhibit. Musculoskeletal eponyms: who are those guys? Radiographics. 20 (3): 819-36. Radiographics (full text) - Pubmed citation