case_images: PMC3275470_01
case_images: Atlantoaxial computed tomography scan. Atlantoaxial rotation of 46  to the left.
case_images: 1752-1947-6-27-1.jpg
case_images: PMC3275470_01_1752-1947-6-27-1.jpg
case_images: F1
case_images: A computed tomography (CT) scan revealed an atlantoaxial rotation of 46  to the left without any signs of osseous lesions (Figure 1).
case_images: Transbuccal fluoroscopy after reduction. Arrows point to the asymmetric distances between the lateral masses of the atlas and the dens axis.
case_images: 1752-1947-6-27-2.jpg
case_images: PMC3275470_01_1752-1947-6-27-2.jpg
case_images: F2
case_images: However, a fluoroscopic control still showed signs of atlantoaxial pathology (Figure 2) and magnetic resonance imaging (MRI) of the cervical spine was done (Figure 3).
case_images: Atlantoaxial magnetic resonance imaging. Arrows point to the intact alar ligaments.
case_images: 1752-1947-6-27-3.jpg
case_images: PMC3275470_01_1752-1947-6-27-3.jpg
case_images: F3
case_images: However, a fluoroscopic control still showed signs of atlantoaxial pathology (Figure 2) and magnetic resonance imaging (MRI) of the cervical spine was done (Figure 3).
case_images: Sagittal magnetic resonance imaging (T2). The magnetic resonance imaging scan of the cervical spine on the day of trauma (A) shows an epidural mass (arrows) dorsally to C5/C6 - probably a hematoma or a disc protrusion, without signs of myelopathy. Six weeks later (B) the mass has decreased in size, the remaining disc C5/C6 is intact.
case_images: 1752-1947-6-27-4.jpg
case_images: PMC3275470_01_1752-1947-6-27-4.jpg
case_images: F4
case_images: It showed the integrity of the transverse and the alar ligaments and a traumatic discus protrusion on level C5/6 (Figure 4).
case_images: Rotatory computed tomography scan. Atlas (A + B) and axis (C + D) with the head rotated to the left (A + C) and to the right (B + D).
case_images: 1752-1947-6-27-5.jpg
case_images: PMC3275470_01_1752-1947-6-27-5.jpg
case_images: F5
case_images: After three days of immobilization and analgesic therapy, a CT (with maximum bilateral head rotation) showed no persisting atlantoaxial fixation (Figure 5).