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15 Back and Neck Pain
John W. Engstrom / Richard A. Deyo

	Figure 15-1  Vertebral anatomy. (From A Gauthier Cornuelle, DH Gronefeld: Radiographic Anatomy Positioning. New York, McGraw-Hill, 1998; with permission.)
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	Figure 15-2  Spinal column. (From A Gauthier Cornuelle, DH Gronefeld: Radiographic Anatomy Positioning. New York, McGraw-Hill, 1998; with permission.)
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	Figure 15-3  Compression of L5 and S1 roots by herniated disks. (From Adams and Victor's Principles of Neurology, 9th ed. New York, McGraw-Hill, 2009; with permission.)
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	Figure 15-4  Left L5 radiculopathy. A. Sagittal T2-weighted image on the left reveals disk herniation at the L4-5 level. B. Axial T1-weighted image shows paracentral disk herniation with displacement of the thecal sac medially and the left L5 nerve root posteriorly in the left lateral...
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	Figure 15-5  Axial T2-weighted images of the lumbar spine. A. The image shows a normal thecal sac within the lumbar spinal canal. The thecal sac is bright. The lumbar roots are dark punctuate dots in the posterior thecal sac with the patient supine.
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	Figure 15-6  Right C7 radiculopathy. A. Sagittal T2-weighted image shows mild disk bulging at C6-C7 and a mildly narrowed spinal canal, but no visible nerve root compression. B. Axial T2-weighted image. The combination of uncinate hypertrophy and facet...
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