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Updated: Jul 15, 2026
12:25
C-arm-Free Simultaneous OLIF51 and Percutaneous Pedicle Screw Fixation in a Single Lateral Position
Published on: September 16, 2022
C1 lateral screws and C2 pedicle/pars screws.
1Indiana University School of Medicine, Indiana Spine Group, Indianapolis, Indiana, USA.
Instructional Course Lectures
|May 3, 2007
Summary
New posterior cervical instrumentation systems focus on C1 and C2 fixation. Understanding C1 anatomy and soft-tissue structures is crucial for safe screw placement in upper cervical spine surgery.
Area of Science:
- Orthopedic Surgery
- Neurosurgery
- Spinal Instrumentation
Background:
- Posterior cervical screw-rod instrumentation systems are evolving for upper cervical spine fixation.
- Segmental fixation into the first (C1) and second (C2) cervical vertebrae is gaining attention.
- The C1 lateral mass offers a reliable anchor, but its surgical corridor requires careful navigation.
Purpose of the Study:
- To highlight the importance of understanding C1 bony landmarks and surrounding soft tissues for safe screw placement.
- To discuss emerging techniques for achieving stable segmental screw fixation in the C2 vertebra.
- To emphasize the role of advanced instrumentation in overcoming anatomical challenges in upper cervical fixation.
Main Methods:
- Review of anatomical considerations for C1 lateral mass screw placement.
- Discussion of techniques for segmental screw fixation into C2.
- Evaluation of the utility of polyaxial screw heads and offset connectors in C2 fixation.
Main Results:
- The C1 lateral mass is a safe and robust fixation point.
- Accurate knowledge of C1 bony landmarks and soft-tissue structures (vertebral artery, C2 nerve root) is critical.
- New techniques allow for secure C2 screw placement irrespective of rod positioning.
Conclusions:
- Safe and effective fixation of the upper cervical spine relies on a thorough understanding of C1 and C2 anatomy.
- Advancements in instrumentation facilitate robust segmental fixation, improving outcomes in cervical spine surgery.
- Further development of C2 fixation techniques is essential for comprehensive upper cervical stabilization.
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