True accuracy of percutaneous pedicle screw placement in thoracic and lumbar spinal fixation with a CT-based navigation system: Intraoperative and postoperative assessment of 763 percutaneous pedicle screws

•Percutaneous screws with a navigation did not completely prevent screw deviation.•Intraoperative screw replacement occurred in 1.3% of all screw insertions.•To confirm placement with real-time assistance even under a navigation is necessary. To investigate intraoperative reinsertion of percutaneous...

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