Navigated percutaneous pelvic sacroiliac screw fixation: Experimental comparison of accuracy between fluoroscopy and Iso-C^3D navigation

Abstract

Percutaneous sacroiliac screw fixation is technically demanding and can result in complications mainly related to imaging problems. Furthermore, the conventional technique performed using fluoroscopic control is associated with a long radiation exposure. The purpose of this study was to evaluate the accuracy of two navigation technologies used in traumatology; fluoroscopy and Iso-C^3D navigation. A total of 40 screws were placed (20 with Iso-C^3D, 20 with 2D fluoroscopy) at levels S1 and S2. With both technologies, all S1 screws could be placed correctly, but four (10%) incorrect placements were seen at S2 with fluoroscopy navigation. With all Iso-C^3D navigated drillings, no perforation was seen. Iso-C^3D navigation therefore proved superior to 2D fluoroscopy navigation for sacroiliac screw fixation in an experimental set-up designed to assess accuracy.

• 3D navigation
• fluoroscopic navigation
• sacroiliac screw
• accuracy
• orthopaedic navigation
• screw placement