CT image of C2–3 congenital fusion. A Vertebral body fusion and lamina

Klippel-Feil syndrome

Early Outcomes of Bone Autografting in the Bilateral Atlantoaxial Joints Applied in Posterior Fusion Surgery - Wang - Orthopaedic Surgery - Wiley Online Library

Surgical Neurology International

Posterior atlantoaxial fusion: a comprehensive review of surgical techniques and relevant vascular anomalies - Chen - Journal of Spine Surgery

Spinal Trauma - Injuries; Poisoning - Merck Manuals Professional Edition

Anterior–Posterior Surgical Treatment of a C2 Aneurysmal Bone Cyst

Juedong HOU, PhD Student, Doctor of Medicine, Southern Medical University, Guangzhou, FIMMU, nanfang hospital

Figure 5 from Congenital fusion of cervical vertebrae clinical significance

Posterior atlantoaxial fusion: a comprehensive review of surgical techniques and relevant vascular anomalies. - Abstract - Europe PMC

Klippel Feil Syndrome