 left right oblique and lateral fluoroscopic images of the L1-2 through L5-S1 levels were obtained.  We then proceeded to prepare the low back with a Betadine solution and draped sterile.  Using an oblique approach to the spine, the L5-S1 level was addressed using an oblique projection angled C-arm in order to allow for perpendicular penetration of the disc space.  A metallic marker was then placed laterally and a needle entrance point was determined.  A skin wheal was raised with 1% Xylocaine and an #18-gauge needle was advanced up to the level of the disc space using AP