PMC8035590_01
Images of a 16-year-old male patient. (a) T2-weighted magnetic resonance imaging showing no evidence of compression of the neural structures at craniovertebral junction. (b) Computed tomography scan with the neck in flexion showing no evidence of atlantoaxial instability. (c) Computed tomography scan with the head in flexion showing the right sided facets. The facet of atlas is dislocated anterior to the facet of axis. (d) Computed tomography scan with the head in flexion showing the left sided facets. The facet of atlas is dislocated posterior to the facet of axis. (e) Three-dimensional computed tomography scan image showing rotatory atlantoaxial dislocation. (f) Anteroposterior view of the X-ray chest showing spinal kyphoscoliosis. (g) Lateral radiograph showing atlantoaxial fixation and fusion. (h) Postoperative plain radiograph showing reduction of spinal kyphoscoliosis. (i) Images of the patient (preoperative-upper line) and postoperative (lower line)
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F1
However, there was evidence of rotatory atlantoaxial dislocation [Figure 1]. The coronal Cobb's improved to 50  and the thoracic kyphosis improved to 38  [Figure 1].