Fig. 1. Reconstructed sagittal CT scan from patient 1 showing the traumatic spondyloptosis at T6–7.

Fig. 2. AP (a) and lateral (b) radiographs of patient 1 performed 6 weeks after surgery showing complete reduction of the dislocation with M8 multiaxial pedicle screw instrumentation (Medtronic Sofamor-Danek, Memphis, TN, USA) from T5–T8.

Fig. 3. Sagittal reconstructed CT scan (a) and sagittal T2-weighted MR scan of the thoracic spine (b) in patient 2 prior to surgery. The CT scan shows the severity of the deformity with the inferior endplate of T12 aligned with the superior endplate of L1. On the MR image complete disruption across the disc space at T12/L1 is evident with what appears to be anatomical transaction of the spinal cord at this level.

Fig. 4. Intraoperative view of patient 2 prior to reduction of the spondyloptosis. TSRH instrumentation (Medtronic Sofamor-Danek, Memphis, TN, USA) with extended posts allowed for manipulation of the affected vertebra and intraoperative reduction.

Fig. 5. AP (a) and lateral (b) radiographs of the thoracic spine performed 2 weeks after surgery showing complete reduction of the spondyloptotic segment with an interbody graft performed around R90 PEEK spacers (Medtronic Sofamor-Danek, Memphis, TN, USA). Pedicle screw fixation extends from T11–L2.