3nov01, additionally, all, andrea, away, back, backbone, backs, bilateral, block, bone, bones, capsule, capsules, column, columns, covering, coverings, cut, cut-away, done, dura, dural, epidural, facet, facets, inc, inject, injection, injections, injects, into, l, l-2, l-3, l-4, l-5, l2, l3, l3-4, l3-l4, l4, l4-5, l4-l5, l5, l5-s1, layer, layers, level, levels, low, lower, lumbar, made, management-, mater, meningeal, meninges, meninx, nerve, nerves, nucleus, pain, posterior, root, roots, s, s-1, s1, side, spinal, spine, spines, spinous, vertebra, vertebrae, vertebral, vessel, vessels, 1, 2, 3, 4, 5