TY - JOUR T1 - Incorrect Needle Position during Lumbar Epidural Steroid Administration: Inaccuracy of Loss of Air Pressure Resistance and Requirement of Fluoroscopy and Epidurography during Needle Insertion JF - American Journal of Neuroradiology JO - Am. J. Neuroradiol. SP - 502 LP - 505 VL - 26 IS - 3 AU - Walter S. Bartynski AU - Stephen Z. Grahovac AU - William E. Rothfus Y1 - 2005/03/01 UR - http://www.ajnr.org/content/26/3/502.abstract N2 - Summary: Loss of air pressure resistance leads to a high rate (25.7%) of inaccurate needle-tip placement in the posterior soft tissues of the back during lumbar epidural steroid administration employing a 20-gauge Tuohy needle. Imaging and epidurogram are essential for confident identification of the lumbar epidural space to enable accurate location of steroid administration. Studies assessing efficacy of lumbar epidural steroid injection and individual patient treatments should ensure location of administration with epidurogram to enhance the validity of results. ER -