Atlas Ligament
A previously unknown ligament that connects the Dens to the Atlas was discovered. This ligament also helps in limiting the rotation of the Atlas.
Anatomy in this medical illustration: Atlas, Axis, Dens, C1, C2, Posterior tubercle, Anterior tubercle, Spinous process, Zygapophyseal joint, Transverse process, Transverse foramen, Superior articular facet, Inferior articular facet, Anterior articular facet, Posterior articular facet, Bone cross section, Transverse cross section, Ligament