This model, which is unique world-wide, consists of cervical vertebra C3, axis C2, atlas C1 and a segment of the occipital bone. All components are represented in 2 x enlargement for improved demonstration. With this model, the movements in the upper cervical area can be understood in a true to life and anatomically correct manner. All possible movements in the atlanto-occipital and atlantoaxial articulation can be demonstrated admirably. Without stand.