Cortical Bone Trajectory Screws Using the Cannulator Technique - Accuracy and Reoperation Rates

The minimally invasive midline approach allows patients to return home a few hours after surgery.

Dr Khanna presented his results on accuracy and reoperation rates for screw position utilizing the cannulator technique with a review of 1503 screws placed utilizing the cannulator technique (since 2014)

• 1503 total screws were placed

• Accuracy rate for screws was 99.6%

• 5 screws required repositioning, with an overall replacement rate of 0.4%

There have been many previous studies looking at the placement of freehand standard trajectory pedicle screws, compared with robotic navigated placement. But, this is the first paper that has looked at revision rates for malpositioned cortical screws.