Spinal PunctureAnesthesia, SpinalNeedlesSpinal CordPuncturesSpinal Cord InjuriesBiopsy, NeedleInjections, SpinalPost-Dural Puncture HeadacheSpinal NervesSpinal Cord DiseasesSpinal Nerve RootsSpinal CanalSpinal Cord NeoplasmsSpinal DiseasesSpinal Cord CompressionSpinal NeoplasmsSpinal StenosisSpinal FusionSpinal InjuriesMuscular Atrophy, SpinalSpinal Cord IschemiaGanglia, SpinalMotor NeuronsThoracic VertebraeSpine