CASE:
Non-neoplastic bone destruction, known as Andersson lesion, is not rare in ankylosing spondylitis (AS) and always appeared as bone destruction and sclerosis in the vertebral body-intervertebral disc region. The Andersson lesion has been reported mostly in the thoracic and lumbar spine and rarely in the lower cervical spine. We surgically treated a patient with AS complicated with atlantoaxial dislocation and destruction of dens and lateral atlantoaxial joint, which was similar to the Andersson lesion.
CONCLUSIONS:
AS can cause destructive lesion in the upper cervical spine. Posterior reduction, removal of the lesion, and fusion were possible approaches for the treatment of this destructive lesion.
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