Dandy–Walker malformation (DWM), also known as Dandy–Walker syndrome, is a rare congenital brain anomaly characterized by underdevelopment (agenesis or ...
Daentl–Townsend–Siegel syndrome (also known as Hydrocephalus-Blue Sclerae-Nephropathy syndrome or Familial nephrosis with hydrocephalus and thin skin) is an ...
D-Glycerate dehydrogenase deficiency—also known as 3-phosphoglycerate dehydrogenase (PHGDH) deficiency—is a rare autosomal recessive metabolic disorder in ...
Cubital tunnel syndrome (CuTS) is a condition characterized by compression or irritation of the ulnar nerve as it passes through the cubital tunnel at the ...
Cri du chat syndrome—also called 5p deletion syndrome—is a rare genetic disorder caused by the loss (deletion) of a portion of the short arm (“p arm”) of ...
Traumatic craniocervical distraction is a severe injury in which the skull (cranium) becomes forcibly separated from the top of the spine (cervical vertebrae) ...
Ventral Brainstem Compression (VBC) occurs when structures in front of the brainstem press against it, narrowing its space and disrupting normal function. The ...
Cranial settling, also known as basilar invagination in the context of craniocervical junction pathology, refers to the upward migration of the upper cervical ...
Basilar invagination is a craniocervical junction abnormality in which the odontoid process (the “dens” of C2) migrates upward into the foramen magnum, ...
Atlanto-axial vertical dislocation (also called atlanto-axial distraction injury) occurs when the first cervical vertebra (C1, the “atlas”) moves abnormally ...
Atlanto-axial rotatory dislocation (AARD) is a condition in which the first cervical vertebra (C1, also called the atlas) rotates abnormally against the second ...
The atlanto-axial joint is the articulation between the first cervical vertebra (atlas) and the second cervical vertebra (axis). In a lateral dislocation, the ...
The atlanto-axial joint is where the first cervical vertebra (the atlas) meets the second cervical vertebra (the axis). In a posterior dislocation of this ...
Atlanto-occipital lateral displacement is a severe form of craniocervical injury in which the occipital condyles—the rounded protrusions at the base of the ...
An anterior dislocation of the atlanto-axial (C1–C2) joint occurs when the atlas (C1) shifts forward relative to the axis (C2), disrupting the normal alignment ...
The atlanto-axial joint lies between the first cervical vertebra (atlas) and the second cervical vertebra (axis). An atlanto-axial dislocation occurs when the ...
Atlanto-axial instability (AAI) refers to excessive movement between the first cervical vertebra (the atlas, C1) and the second cervical vertebra (the axis, ...
Degenerative instability of the atlanto-occipital (AO) joint refers to excessive movement at the junction between the skull’s occipital condyles and the first ...
Atlanto-occipital joint neoplastic instability refers to abnormal, excessive movement at the junction between the base of the skull (occiput) and the first ...
Atlanto-occipital joint inflammatory instability occurs when inflammation weakens or destroys the ligaments and joint surfaces between the atlas (C1) and the ...
