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C-arm-Free Simultaneous OLIF51 and Percutaneous Pedicle Screw Fixation in a Single Lateral Position
Published on: September 16, 2022
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The Feasibility of Multiple Fixation Points in C2
Quyen Nguyen Ngoc1, K Daniel Riew2,3, So Min Lee4
1Spine Surgery Unit, Polyclinic and Premier Healthcare Center, 108 Military Central Hospital, Hanoi, Socialist Republic of Vietnam.
Asian Spine Journal
|July 14, 2023
Summary
This study shows that the C2 vertebra can safely accommodate multiple screw placements. Most patients can have four screws, with others accommodating three, ensuring secure spinal fixation.
Area of Science:
- Neurosurgery
- Orthopedic Surgery
- Spinal Anatomy
Background:
- Secure C2 fixation is crucial in specific spinal cases.
- Previous research has not analyzed the feasibility of multiple screw fixation in the C2 vertebra.
Purpose of the Study:
- To evaluate the feasibility of achieving three or four screw fixation points in the C2 vertebra.
- To assess the utility of combining pedicle and laminar screws for C2 fixation.
Main Methods:
- Utilized 3D simulation software and CT scan images from 100 patients.
- Analyzed the anatomical feasibility of placing both pedicle and laminar screws on the same C2 side.
- Measured the 3D distance between screw entry points to ensure adequate spacing.
Main Results:
- Four screws were feasible in 85% of cases (bilateral pedicle and laminar screws).
- Three screws were feasible in 11% of cases (unilateral dual screws).
- The distance between entry points exceeded 16.1 mm, preventing screw head collision.
Conclusions:
- The C2 vertebra can accommodate three or four screws in 96% of analyzed cases.
- This multi-screw fixation strategy enhances C2 stability.
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