Fig. 1.

A 28-year-old man had progressive paraparesis five years after a fall. He complained of weakness in the lower extremities and decreased sensation below the T10 dermatome. A : Magnetic resonance images show a large multiseptate syrinx from C5 to L1, with a bony fragment retropulsed from L2. The spinal cord is expanded over the fractured L2 vertebra. B : Computed tomography shows the retropulsed bony fragment at the fractured L2 vertebra, and spinal curvature reveals the kyphotic deformity.