Signs and symptoms in patients with CM-I occur due to direct compression of the posterior fossa structures and altered cerebrospinal fluid flow dynamics at the craniocervical junction
. The severity of the clinical signs is proportional to the impact on the flow of cerebrospinal fluid at the craniocervical junction
, and abnormal cerebrospinal fluid flow patterns are detected significantly more often in patients with symptomatic CM-I than in those with asymptomatic tonsillar ectopia.
Anatomy and Physiology of the Craniocervical Junction
When performing dynamic CT myelography, patients are positioned prone in Trendelenburg position typically using a large foam wedge with the hips elevated above the craniocervical junction
to ensure downward trajectory of contrast flow.
Surgery for chordomas of the craniocervical junction
: lessons learned.
Keywords: Craniocervical junction
anomalies, os odontoideum, myelopathy
MRI of the cervical spine revealed spinal cord compression at the level of the foramen magnum secondary to a craniocervical junction
anomaly with severe kyphosis of the upper cervical spine at the level of C3-C4 (Figure 1).
The following definitions were provided: type 1, nondisplaced OCF; type 2A, displaced OCF with intact ligaments; and type 2B, displaced OCF with radiographic evidence of craniocervical junction
There are several developmental variations in the region of the craniocervical junction
. Some variations are minor anatomic abnormalities, but they can cause severe diagnostic problems.
KEYWORDS: Craniocervical junction
instability, Occipitocervical fusion.
Among his topics are brain anatomy and development, posterior fossa malformations, perinatal imaging, neurocutaneous syndromes, seizures, infection and inflammation, vascular abnormalities, sella turcica/pineal gland, skull and scalp, skull base and cranial nerves, vascular abnormalities of the head and neck, temporal bone, spine anatomy and craniocervical junction
, and congenital and developmental spine abnormalities.
Schwannomas of the craniocervical junction
and high cervical region (C0-C2) extending anteriorly were treated with a posterior approach with suboccipital extension (when required) or with a posterior-lateral (far lateral) approach [23-26].