Imaging Diagnosis—traumatic Myelopathy in a Dog With Incomplete Ossification of the Dorsal Lamina of the Atlas

Cervical myelopathy due to complex Atlanto‐axial malformation including partial atlantal dorsal arch aplasia in a domestic rabbit

“…Case reports and studies in dogs with incomplete ossification of the atlas imply that a subsequent atlanto‐axial subluxation leads to a cervical myelopathy rather than the malformation of the atlas itself ( Owen et al . , Warren‐Smith et al . , Parry et al .…”

“…In five dogs minor trauma or increased physical activity caused the initiation of clinical signs ( Owen et al . ; Warren‐Smith et al . ; Wrzosek et al .…”

“…Additional defects such as dens malformation, malformation‐malarticulation of other cervical vertebrae or a lateral atlanto‐occipital displacement were not described ( Owen et al . ; Warren‐Smith et al . ; Parry et al .…”

“…A suspected diagnosis of atlas malformation in dogs could be made in most cases by radiography but for confirmation of the diagnosis advanced imaging was necessary ( Owen et al . , Warren‐Smith et al . , Parry et al .…”

Congenital bipartite atlas with hypodactyly in a dog: clinical, radiographic and CT findings

“…Anomalies of the first cervical vertebra in dogs include incomplete ossification of the dorsal lamina (Owen et al. ) and the sutures of the neural arch as well as the intercentrum of the atlas (Warren‐Smith et al. ) with subsequent atlantoaxial subluxation and traumatic myelopathy.…”