Background Intraoperative (IO) image guidance surgery using 3-dimensional fluoroscopic
navigation methods, such as the O-arm system, has improved the accuracy of pedicle screw …

Study Design. A prospective case-series study and a retrospective analysis of historical
patients for comparison of data. Objective. To compare accuracy and limitations of …

Background Navigated instrumented spine surgery is burden by a low but significant screw
mispositioning risks, respectively, for the 2D imaging system from 15% to 40% and, for the …

Background O-arm and C-arm are commonly used in spine surgery to guide pedicle screw
placement. However, concerning the accuracy and efficiency of them, no systematical …

Object Several retrospective studies have demonstrated higher accuracy rates and
increased safety for navigated pedicle screw placement than for free-hand techniques; …

Aim: To investigate the accuracy of pedicle screw placement based on preoperative
computed tomography in comparison with intraoperative data set acquisition for spinal …

Purpose To assess whether the intention to intraoperatively reposition pedicle screws differs
when spine surgeons evaluate the same screws with 2D imaging or 3D imaging. Methods In …

Background Technological advances, including navigation, have been made to improve
safety and accuracy of pedicle screw fixation. We evaluated the accuracy of the virtual screw …

Background Pedicle screws are biomechanically superior over other spinal fixation devices.
When improperly positioned, they lose this advantage and put adjacent structures at risk …

Objective: Even with CT-based navigation, the misplacement rate for pedicle screws is
reported to be as high as 10%. Using fluoroscopy-based 3D navigation, misplacement rates …