Related Experiment Videos
Translaminar rigid screw fixation of the axis. Technical note
1Department of Neurological Surgery, Washington University School of Medicine, St. Louis, Missouri 63110, USA. wrightn@nsurg.wustl.edu
Journal of Neurosurgery. Spine
|November 24, 2005
Summary
Translaminar screw fixation offers a safe and effective method for stabilizing the axis (C2 vertebra), achieving high fusion rates without risking the vertebral artery. This technique is ideal for surgeons seeking a simpler alternative to complex fixation methods.
Area of Science:
- Neurosurgery
- Orthopedic Surgery
- Spinal Surgery
Background:
- C1-C2 transarticular and C-2 pedicle screws provide rigid fixation for the axis but are technically challenging due to vertebral artery injury risks and anatomical variations.
- Alternative fixation methods are needed to improve safety and accessibility for C2 stabilization.
Purpose of the Study:
- To evaluate the long-term efficacy and safety of translaminar fixation of the axis using bilateral crossing screws.
- To assess fusion rates and complications in patients with various craniocervical instabilities.
Main Methods:
- Retrospective analysis of 20 patients undergoing translaminar axis fixation for craniocervical, atlantoaxial, and axial-subaxial instability.
- Utilized bilateral crossing screws for translaminar fixation, avoiding direct manipulation near the vertebral artery.
Main Results:
- Achieved 100% bony fusion rates across all treated patients.
- Reported no neurological or vascular complications related to the surgical procedure.
- Demonstrated technical simplicity and independence from individual anatomical variations.
Conclusions:
- Translaminar fixation of the axis is a safe, effective, and technically straightforward technique for achieving rigid C2 stabilization.
- It presents a viable alternative for surgeons, particularly those less experienced with more complex C1-C2 fixation methods.
- This method offers excellent long-term fusion outcomes with a low complication profile.