PMC5324365_01
Patient 1 - (a) Computed tomography C spine, (b) magnetic resoance imaging C spine
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F1
CT of the cervical spine demonstrated C7/T1 spondyloptosis, associated with a locked facet on the left at C6/7 and a locked facet of C7/T1 on the right, with fracture of the left C7 pedicle and right C7 lamina [Figure 1a]. A magnetic resonance imaging (MRI) of the cervical spine demonstrated significant deformity of the spinal canal and deformity of the spinal cord, with minimal cord edema [Figure 1b].
Patient 1 - Flexion/extension films at 3 months
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F2
Postoperative flexion/extension films at 3 months demonstrated maturation of fusion and no instability [Figure 2].
PMC5324365_02
Patient 2 - (a) Computed tomography C spine, (b) magnetic resoance imaging C spine (patient 2 was previously published in Surgical Neurology International, and is briefly presented here)
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F3
Imaging demonstrated C7/T1 spondyloptosis, with fractures of bilateral C7 pedicles, C7/T1 facets, and C7 lamina [Figure 3a and b].
Patient 2 - Flexion/extension films at 6 months (patient 2 was previously published in Surgical Neurology International, and is briefly presented here)
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F4
Postoperative flexion/extension films at 6 months demonstrated maturation of fusion and no instability [Figure 4].
PMC5324365_03
Patient 3 - (a) Computed tomography C spine, (b) magnetic resoance imaging C spine
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F5
CT cervical spine demonstrated a grade 4 spondylolisthesis at C7/T1, associated with bilateral C7/T1 locked facets [Figure 5a]. MRI cervical spine demonstrated narrowing of the spinal canal with equivocal cord edema and disruption of the anterior longitudinal ligament/ligamentum flavum/interspinous ligaments; posterior longitudinal ligament appeared intact [Figure 5b].
Patient 3 - Flexion/extension films at 6 months
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F6
Postoperative flexion/extension films at 6 months demonstrated maturation of fusion and no instability [Figure 6].