atlantoaxial

1 9.9

Relates to the joint between the first and second bones in the neck that lets the head turn

adjective
/ˌæt.læn.toʊˈæk.si.əl/

Specialized

: atlantoaxial

Doctors often monitor patients for atlantoaxial instability, especially in individuals with certain genetic disorders.
atlantoaxial subluxation

Examples

For example, children with Down syndrome are susceptible to atlantoaxial instability (AAI), which can cause paralysis if the child hyperflexes his/her neck.

Academic text (1996)
Possible Spinal Presentation of DISH Atlantoaxial Subluxation

Academic text (2004)
The atlantoaxial joint allows for the rotation of the head while keeping the spine stable.
In severe cases, atlantoaxial subluxation may require surgical intervention to prevent spinal cord damage.

Surface Forms

atlantoaxial positive

Morphology

atlantoaxial = atlas + axis (semi-transparent) = atlanto + axis + al

The term combines medical combining form 'atlanto-' (from atlas) with 'axis' + '-al'; the structure is clear to those familiar with anatomical terms but is specialized for general learners.

Etymology

Atlantoaxial comes from the names of two neck bones: atlanto- from atlas, the top bone that 'carries' the head, and axial from axis, the second bone whose name means 'pivot' or 'axle'. So, atlantoaxial describes the joint where the 'carrier' and the 'pivot' meet to let the head turn.