Fusion of the 2nd with the 3rd Cervical Vertebrae (C2-C3): A Case Series with Possible Clinical Significance

Figure 1

The measured distances of the fused cervical vertebrae C2-C3: a—distance between the transverse processes (TP) of the fused cervical vertebrae (C2TP-C3TP), b—the odontoid process (dens-D) height (yellow line, calculated from the base of the dens to its tip), and c—the height of the fused cervical vertebral bodies (red line—C2VB-C3VB).