PMC6276388_01
Left parasagittal (a) and coronal (c) CT scan images show a right nondisplaced impaction occipital condyle fracture (arrow), classified as Anderson and Montesano type I and Tuli type 1. Right parasagittal CT image (b) shows an occipital condyle-C1 interval of 2.5 mm (double-headed arrow) and a 5 mm translation of C1-C2 (asterisk).
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fig1
Computed tomography of her cervical spine showed a left nondisplaced impaction OCF with an occipital condyle-C1 interval of 2.5 mm and a 5 mm translation of C1-C2 (Figure 1).
Left (a) and right (b) parasagittal CT scan images demonstrate complete reduction of both the atlantooccipital joint and the atlantoaxial joint.
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fig2
After reduction, computed tomography was performed and we confirmed the complete reduction of both the atlantooccipital joint and the atlantoaxial joint (Figure 2).
Postoperative radiograph shows occipitocervical fusion achieved by an occipital plate and bilateral C2 pedicle screws.
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fig3
We proceeded to internal segmental fixation with an occipital bone plate and bilateral pedicle screws for C2 (Figure 3).