Imaging of the spine is given a thorough update in this issue, beginning with an article on spine segmentation, enumeration and normal variants.? Imaging of degenerative disease of the spine is then reviewed, giving consideration to appropriate utilization of imaging, specificity and sensitivity shortcomings in evaluation of degenerative disease, risks and benefits of imaging of degenerative disease, and the prevalence of radicular? and? xial pain and underlying? pain generators.? Next, the validity and socioeconomic? impact of spine imaging in evaluating -degenerative? pain syndromes is...