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Updated: May 15, 2026
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Multilevel Oblique Lumbar Interbody Fusion in Degenerative Lumbar Disc Disease with Instability
Published on: July 25, 2025
[Posterior lumbar fusion using the O-arm surgical imaging system: initial experience]
Julián Castro Castro1, Jon Rodino Padín, Alfonso Pinzón Millán
1Servicio de Neurocirugía, Complejo Hospitalario Universitario de Ourense, Ourense, España.
Neurocirugia (Asturias, Spain)
|December 19, 2012
Summary
Computer-assisted navigation with the O-arm imaging system significantly improves pedicle screw accuracy in lumbar fusion surgery. This technology enhances safety by reducing screw misplacement complications, leading to better patient outcomes.
Area of Science:
- Neurosurgery
- Orthopedic Surgery
- Medical Imaging
Background:
- Transpedicular screw fixation is standard for lumbar spine pathologies.
- Screw misplacement risks serious neurological injury.
- Computer-assisted navigation offers improved accuracy over fluoroscopy.
Purpose of the Study:
- To evaluate the accuracy and safety of O-arm imaging for pedicle screw placement in posterior lumbar fusion.
- To assess the impact of O-arm navigation on surgical outcomes.
Main Methods:
- Retrospective review of 40 patients undergoing posterior lumbar fusion with O-arm utilization.
- Analysis of intraoperative CT images for screw placement accuracy.
- Assessment of surgical duration and screw placement time.
Main Results:
- 252 pedicle screws placed with O-arm navigation (mean 6.3/patient).
- 98.81% accuracy rate with 3 screws redirected intraoperatively.
- Mean surgery time 157.2 minutes; mean screw placement time 7.13 minutes.
- Low complication rate (7.5% superficial wound infection), no reoperations for malposition.
Conclusions:
- Intraoperative O-arm imaging with computer-assisted navigation enhances pedicle screw placement accuracy in lumbar fusion.
- This technology improves surgical safety by minimizing malposition risks.
- O-arm navigation is a valuable tool for complex spinal surgery.
