Posterior Wiring Techniques Several posterior wiring methods have been described in the litera­ture. Gallie, in 1939, described C1-C2 sublami­nar steel wire fixation [ iliac crest bone graft is notched inferiorly and fit­ted over the spinous process of C2 below and leaned against the posterior arch of C1 above. The steel wire is passed under the C1 lamina, then dorsal to the iliac crest graft, and tightened around the spinous process of C2. Sonntag described a modification of this technique in 1991 [41], where the bone graft is fitted along the caudal surface of the C1 posterior arch, as apposed to leaning it on the dorsal surface of the C1 posterior arch. This modification, which uti­lizes the same wiring technique, but instead applies a “press-fit” wedging of the graft, resulted in significantly high fusion rates (up to 97%). Brooks and Jenkins, in 1978, described another wiring method [42] where two separate iliac crest grafts are beveled and wedged between the pos­terior C1 arch, and C2 lamina. These are secured with two sublaminar wires, one on each side of the midline, passed underneath the laminae of C1 and C2, and wrapped around each graft, respec­tively. They reported a 93% fusion rate with this technique.