Figure 26 Gallie Wire Fusion A gallie wire fusion between the C1 and C2 vertebral bodies is a posterior fusion between the posterior arches of C1 and C2. Bone grafts rest on the posterior surface of the C1 arch and the posterior surface of the C2 arch. The wire wraps around C1, sublaminar to C1 and around the spinous process of C2. The wire does not encroach the spinal canal at C2. Level: Structures: Other Structures: Pathology: Procedure: View: C1 – C2 Neural: Brainstem and spinal cord Dura None Normal Gallie wire fusion Composite (3/4), Front, Lateral, Caudal