PMC7676959_01
CT scans of our patient 1. (a) The anteroposterior view shows the asymmetry of the lateral masses of the atlas with respect to the axis. (b) The transversal view shows the rotation of the atlas on the axis.
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fig1
CT scan with multiplanar reconstructions confirmed the atlantoaxial rotary subluxation, with an increase in the atlanto-dens interval of 6 mm (Figure 1), corresponding to a Type III GS.
CT scans at follow-up of patient 1 show realignment of the atlas with the axis.
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fig2
Philadelphia brace was positioned and maintained for 1 month, and the antibiotic treatment was continued for 13 total days, with no recurrence of the subluxation at the clinical and radiologic follow-up (Figure 2).
PMC7676959_02