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Example of thoracic ossification of the posterior longitudinal ligament (OPLL) in a 53-year-old obese male with type 2 diabetes mellitus. The spinal canal is markedly narrowed by thoracic OPLL, with inability to walk. (A) Sagittal computed tomography (CT) of the whole spine. (B) Sagittal CT of the thoracic spine. This is a case from our institution.
