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Updated: May 18, 2026
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A Spine Robotic-Assisted Navigation System for Pedicle Screw Placement
Published on: May 11, 2020
Robotic-assisted pedicle screw placement: lessons learned from the first 102 patients
Xiaobang Hu1, Donna D Ohnmeiss, Isador H Lieberman
1Scoliosis and Spine Tumor Center, Texas Back Institute, Texas Health Presbyterian Hospital Plano, Plano, TX 75093, USA.
Summary
Robotic-assisted spinal surgery shows high accuracy in screw placement, with 98.9% of robot-implanted screws accurately placed. This technology is effective even in complex spinal deformity cases.
Area of Science:
- Neurosurgery
- Orthopedic Surgery
- Medical Robotics
Background:
- Growing surgeon interest in robotic guidance for spinal implant placement.
- Advancements in robotic technology offer potential benefits for challenging patient anatomies.
- Clinical evaluation is crucial to define successful applications and limitations of robotic spinal surgery.
Purpose of the Study:
- To evaluate the outcomes of robotic-assisted pedicle screw placement.
- To assess the accuracy and complications associated with robotic guidance in spinal surgery.
- To identify factors influencing the success and limitations of robotic-assisted screw implantation.
Main Methods:
- Retrospective review of technical notes and operative records for 102 consecutive patients undergoing robotic-assisted screw placement.
- Classification of planned screw placements: successful robotic placement, robotic malposition, manual placement after robot abortion, or non-placement.
- Independent researcher review to identify diagnoses, attempted placements, outcomes, and complications.
Main Results:
- Robotic guidance was successfully used in 95 of 102 patients.
- 949 out of 1,085 planned screws (87.5%) were successfully implanted robotically.
- 11 screws (1.0%) were misplaced, and robotic guidance was aborted for 110 screws (10.1%) due to technical issues.
Conclusions:
- Robotic-assisted screw implantation achieved 98.9% accuracy in 960 implanted screws, even in patients with complex spinal conditions.
- "Tool skiving" identified as a potential cause for misplaced screws.
- Critical role of intraoperative fluoroscopic imaging for accurate registration in robotic spinal surgery.
