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prn85576DS.JPG
This illustration series depicts the anatomy of the lumbosacral (lumbar and sacral) spine from a mid-sagittal cut-away view with an epidural needle poised outside the skin at the L4-5 interspace. Extensive labels include intervertebral disc, vertebral body, ligamentum flavum, L1, L2, L3, L4, L5, S1, dura mater and arachnoid, cauda equina, cerebrospinal fluid (CSF), spinal cord, supraspinous ligament and intrathecal space.