1. T1-weighted sagittal MR imaging of the sacrum demonstrates fracture-related edema in the S2 sacral body.
T1-weighted sagittal MR imaging of the sacrum demonstrates fracture-related edema in the S2 sacral body. Note that the thecal sac ends at the S2 level (black arrowhead), well above the expected needle path for the midline approach (thin black arrow). Note prior L5 and S1 laminectomies. Courtesy of Frank R. Hellinger, Orlando General Hospital, Orlando, Florida.
E.M. Lyders et al. AJNR Am J Neuroradiol 2010;31:
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