Figure 7.

The operative procedure was planned in two steps, because of an insufficient bending in the preoperative radiographs. First, a ventral release was done at the level L1/L2, L2/L3 and L3/4. 7 days later, the dorsal fusion with instrumentation of L5, L4, L3, Th 8, Th 9 with screws in every pedicle and a single screw on L1 (convexity) a Th 12 (concavity) was performed, and fixated on the bar in the right position. After neurologic control in anesthesia the fusion was prepared by inserting autologous bone and osteoinductive bone substitute.