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Updated: May 19, 2026

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A Spine Robotic-Assisted Navigation System for Pedicle Screw Placement
Published on: May 11, 2020
Analysis of CT-based navigation system for pedicle screw placement
Scott D Hodges1, Jason C Eck, Danette Newton
1Center for Sports Medicine and Orthopaedics, Chattanooga Outpatient Center, Chattanooga, TN 37404, USA. dochodges@hotmail.com
Orthopedics
|August 8, 2012
Summary
Intraoperative O-arm imaging significantly reduces pedicle screw revision rates compared to C-arm fluoroscopy. This advanced imaging technique minimizes the need for costly revision surgeries, improving patient outcomes and healthcare economics.
Area of Science:
- Spine surgery
- Medical imaging
- Orthopedic surgery
Background:
- Pedicle screw placement is crucial in spinal fusion.
- Pedicle screw breaches can occur frequently, up to 40%.
- Revision surgery for breaches is costly and impacts patient care.
Purpose of the Study:
- To compare revision rates of pedicle screw placement using intraoperative C-arm vs. O-arm.
- To conduct an economic analysis of pedicle screw revision costs.
Main Methods:
- Retrospective study comparing two imaging techniques.
- Analysis of pedicle screw placement and revision rates.
- Economic evaluation of revision surgery costs.
Main Results:
- 1% of C-arm patients required revision for undetected breaches.
- 0% of O-arm patients required revision.
- Estimated annual national cost savings of over $40 million.
Conclusions:
- Intraoperative O-arm assessment reduces pedicle screw revision needs.
- O-arm technology offers significant cost savings in spinal surgery.
- O-arm improves surgical accuracy and patient outcomes.

