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Stereotactic atlantoaxial transarticular screw fixation
R W Laherty1, R J Kahler, D G Walker
1Kenneth G. Jamieson Department of Neurosurgery, Royal Brisbane Hospital, Herston, Qld., Australia. richardlaherty@hotmail.com
Summary
Frameless stereotaxy offers a safe and accurate method for atlantoaxial stabilization. This technique precisely guided screw placement, achieving successful C1-2 instability management in all patients without complications.
Area of Science:
- Neurosurgery
- Orthopedic Surgery
- Medical Technology
Background:
- Atlantoaxial stabilization is crucial for managing C1-2 instability.
- Surgical techniques have evolved with advancements in spinal instrumentation and stereotactic technology.
Purpose of the Study:
- To evaluate the safety and accuracy of frameless stereotaxy for atlantoaxial screw fixation.
- To assess the efficacy of this technique in achieving stable C1-2 fusion.
Main Methods:
- Retrospective study of nine patients treated between 2001 and 2002.
- Pre-operative CT scans used for screw trajectory planning with frameless stereotaxy.
- Intraoperative stereotaxis and fluoroscopy guided screw placement, followed by post-operative CT confirmation.
Main Results:
- Successful bilateral screw placement in eight patients; single screw fixation planned and achieved in one patient.
- All 17 screws demonstrated accurate placement corresponding to planned trajectories on post-operative CT.
- No post-operative complications were reported, and stabilization was achieved in all cases.
Conclusions:
- Frameless stereotactic atlantoaxial screw fixation is an accessible and safe procedure.
- The technique provides accurate screw placement for managing C1-2 instability.
- This method represents an effective approach for atlantoaxial stabilization.