"paired lateral atlanto-axial joints: classified as planar-type synovial joint between the lateral masses of C1 and C2, though somewhat more complex in shape with concavity of the superior axial facets"
"median atlanto-axial (atlanto-dental or atlanto-odontoid) joint: pivot-type synovial joint with anterior and posterior articulations of odontoid process/dens of C2 and anterior arch and transverse ligament of C1"
"paired lateral atlanto-axial joints: classified as planar-type synovial joint between the lateral masses of C1 and C2, though somewhat more complex in shape with concavity of the superior axial facets"
"median atlanto-axial (atlanto-dental or atlanto-odontoid) joint: pivot-type synovial joint with anterior and posterior articulations of odontoid process/dens of C2 and anterior arch and transverse ligament of C1"
Expected headings
"Function"
"cruciform ligaments: superior, transverse and inferior bands posterior to dens; transverse is strongest portion which stabilises odontoid to the lateral mass of C1 limiting lateral motion of C1 over C2 and limiting subluxation of the joint 1"
"There are a number of congenital anomalies which can affect the atlas, axis and the joint between the two:"
"cruciform ligaments: superior, transverse and inferior bands posterior to dens; transverse is strongest portion which stabilises odontoid to the lateral mass of C1 limiting lateral motion of C1 over C2 and limiting subluxation of the joint 1"
"There are a number of congenital anomalies which can affect the atlas, axis and the joint between the two:"