Figure 3From: Evaluation of occipitocervical neutral position using lateral radiographsA preoperative and postoperative radiograph. (a) Preoperative radiograph of a patient with chronic atlantoaxial dislocation secondary to occipitalization showed a decreased MCD and OCA. After surgery (b), the MCD, OCA, and the curve of the cervical spine were all improved, although the MCD was somewhat longer than normal.Back to article page