Abnormalities of the Atlas and Axis Vertebrae—Congenital and Traumatic

Fusion of the first three cervical vertebrae is indicated in the treatment of unstable lesions in this region particularly if damage to the spinal cord is a possibility. Inclusions of the occiput has been recommended by some authors, yet it appears that if a secure fusion of the first three vertebrae can be obtained with the occiput left free, instability can be corrected and more head motion can be preserved.