Technical TrickUse of the Obturator-Outlet Oblique View to Guide Percutaneous Retrograde Posterior Column Screw PlacementWright, Raymond D. Jr MD; Hamilton, David A. Jr MD, MBA; Moghadamian, Eric S. MD; Bruce, Brandon T. MD; Selby, Jeffrey B. MDAuthor Information Department of Orthopedic Surgery and Sports Medicine, University of Kentucky, Lexington, KY. Reprints: David Hamilton Jr, MD, MBA, 740 South Limestone, Suite K401, KY Clinic, Lexington, KY 40536-0284 (e-mail: firstname.lastname@example.org). No funding was received in support for the generation of this article. E.S. Moghadamian declares a past relationship with Synthes, United States, in which he received a per diem faculty allowance during a resident teaching course. All the other authors declare no conflicts of interest. Accepted July 13, 2012 Journal of Orthopaedic Trauma: June 2013 - Volume 27 - Issue 6 - p e141-e143 doi: 10.1097/BOT.0b013e318269b88c Buy Metrics Abstract Summary: In contrast to open reduction internal fixation, percutaneous fixation is a relatively new option for operative fixation of acetabular fractures. The techniques for percutaneous insertion of anterior and posterior column screws have been previously described. For technical aspects of retrograde percutaneous posterior column screws, much attention has been paid to the proper start point. However, descriptions of proper trajectory and end point have not been as clearly delineated. Understanding of posterior column anatomy and its radiographic correlates are fundamental in the safe placement of this screw. Herein, we present technical advice for acquisition and interpretation of fluoroscopic images needed to ensure a safe trajectory and end point in retrograde percutaneous posterior column screw placement. We highlight our steps to ensure correct placement in a small series. © 2013 Lippincott Williams & Wilkins, Inc.