What lateral plain film measurements of the cervical spine is used to make the diagnosis of atlanto-occipital dislocation (AOD)?
33% 67% 0% 0% The correct answer is BAI and BDI.
The basion-posterior axial line interval (BAI) is a transverse line along the posterior cortex of the axis (the posterior axial line) and the tip of the basion. The basion-dens interval (BDI) is measured from the tip of the dens to the basion.