atlanto-occipital(redirected from atlanto-occipital malformation)
atlanto-occipital, atlantooccipital (ăt-lan″tō-ok-sip′tĭ-ăl) [ atlanto- + occipital]
Pert. to the atlas and the occipital bones.
pertaining to the atlas and occiput, e.g. atlanto-occipital joint.
a congenital defect observed in calves; causes tetraplegia at birth or by two months of age.
includes hypoplasia of the odontoid process, atlanto-occipital fusion.
atlanto-occipital malformation of Arab horses
includes occipitalization of the atlas and atlantalization of the axis. It causes incoordination with a characterisitic extension of the head at birth or soon afterwards.
there are two, the dorsal and ventral, each of which connects the cranial edge of the atlas to the margin of the foramen magnum.