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Figure 2: Images of a 4-year old male child. (a) Sagittal section of CT scan in flexion showing the pancervical fusion and mobile atlantoaxial dislocation. (b) Image in extension showing reduction of the atlantoaxial dislocation. (c) Three-dimensional (3D) reconstructed CT scan image showing the bifid posterior arch of atlas. (d) 3D reconstructed CT scan image showing the bifid anterior arch of atlas. (e) T2 weighted sagittal MRI showing the vertebral fusions. Large posterior subarachnoid space is observed. (f) Postoperative CT image showing reduction and fixation of the atlantoaxial dislocation. (g) Postoperative image showing the fixation construct

Figure 2: Images of a 4-year old male child. (a) Sagittal section of CT scan in flexion showing the pancervical fusion and mobile atlantoaxial dislocation. (b) Image in extension showing reduction of the atlantoaxial dislocation. (c) Three-dimensional (3D) reconstructed CT scan image showing the bifid posterior arch of atlas. (d) 3D reconstructed CT scan image showing the bifid anterior arch of atlas. (e) T2 weighted sagittal MRI showing the vertebral fusions. Large posterior subarachnoid space is observed. (f) Postoperative CT image showing reduction and fixation of the atlantoaxial dislocation. (g) Postoperative image showing the fixation construct