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Figure 6. Nonincorporated bone graft material. Lateral radiograph demonstrates anterior plate and screw instrumentation at C4 through C6, with intervertebral bone blocks used to reconstruct the anterior column. The graft material at C5–6 shows evidence of fusion, with blurring of graft margins and new bone formation in the interspace. Visible at the C4–5 level are persistent graft margins, sclerosis of the adjacent end-plates, and absence of new bone formation, features indicative of a lack of graft incorporation.
