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Most cases of cervical spinal cord myelopathy in adults over age 55 are caused by cord compression from degenerative spondylosis. To distinguish those cases from noncompressive myelopathies (e.g., caused by inflammatory or neoplastic disease), we usually look for canal stenosis and cord compression on MRI. However, cord compression is not always visible with the neck in the neutral position — but it might be evident on MRI when the neck is in flexion and extension positions. In this retrospective single-center study, researchers reviewed cases of 90 patients who had undergone flexion–extension cervical MRI. All patients had clinical evidence of cervical myelopathy and abnormal signal (T2 hyperintensity) in the cervical cord. Most had…