Calcification of the alar ligament is a rare condition, which usually develops in the elderly and tends to occur following traumatic injury or as a consequence of inflammatory disease. In crowned dens syndrome, calcium pyrophosphate dehydrate crystals deposit on the atlantoaxial joint.
A 38-year-old woman with no history of traumatic injury presented with acute-onset neck pain. The patient was diagnosed with rheumatoid arthritis (RA) and …
