Fig. 3　 Radiological images 3 weeks postoperatively.

(a, b) Fractures adjacent to the vertebral bodies caused by the expandable cage were predominantly found in the L1 vertebral body. Local kyphosis from T10-T2 was exacerbated from 7° to 15°, causing spinal kyphosis.(c) The void lesion above the L2 PS, which was forced by the compressive moment caused by the cephalad components, is noteworthy.