Changes in the iliac crest-lumbar relationship from standing to prone

48 patients who underwent spinal surgery were evaluated in either standing and prone on the Andrews operating table or standing and prone on the Jackson operating table. The primary outcome was imaging (comparing the preoperative and intraoperative plain lateral lumbar radiographs for alignment of the iliac crest with the L4/L4-L5 spine). Results indicated better alignment of the iliac crest with the L4/L4-L5 spine with patients prone on the Jackson & Andrews frame intraoperatively compared to preoperative standing.