Figure 2.

Computed tomography taken when a patient with Parkinson’s disease was first referred to our hospital eight days after onset of back pain. The sagittal image (A) shows a fracture of the T11 vertebral body (arrow) and displacement of ankylosed spinous processes (arrowheads). The axial image (B) shows ossification of the ligamentum flavum at the T10-T11 level (arrow). Three-dimensional images (C, D) show a severely ankylosed spine at the thoracolumbar levels, and the fracture site is clearly seen (arrows).