C2 laminar screw insertion
1. Introduction
This technique has the advantage of being relatively easy.
2. Screw entry point
To be able to place bilateral laminar screws, the starting holes must be planned so that insertion of both screws is feasible. One side must be as cranial as possible, while the other side must be as caudal as possible to allow for both screws.
Make a small burr hole as the starting point for the laminar screws.
3. Screw trajectory
Use a pedicle probe directed as dorsally as possible to avoid intrusion into the spinal canal.
4. Screw insertion
Tap, measure the length, and insert polyaxial screws. Often screw lengths of 25–35 mm are possible. A screw that perforates the dorsal cortex of the lamina is perfectly acceptable and may, in fact, be desirable in cases of severe osteoporosis.
