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Chalk Stick Fracture in Ankylosing Spondylitis

Global Radiology CME

7 Primary diagnosis of AS involves radiography of sacroiliac joints and symptomatic areas of the spine (Figs. Because radiography may not detect early signs of AS, non-enhanced MRI is recommended in identifying early signs of disease. 4 Chalk stick fractures may lead to anterior subluxation and narrowing of the spinal canal.