Fig. 2.

A patient with L4/5 lesion was performed by one-stage posterior debridement, bone grafting fusion, and mono-segment fixation. The pre-operative images ((a) plain antero-posterior and lateral, (b) CT lateral, (c) MRI lateral) illustrated severe vertebral destruction at L4/5 with a local lordotic angle (17°). Postoperative images (d-f) exhibited that internal fixation and implanted bone was in good position with an improved local lordotic angle (23.8°). (g-h) At 11-month after surgery, radiograph and CT showed strong bony fusion at interbody of L4/5. (i-j) At the final follow-up (64 month after surgery), X-ray and CT demonstrated strong bony fusion and no obvious correction angle loss (0.9°) with good fixation position