Anterior and lateral radiograph of the lumbar spine that reveals near complete fusion of all of the vertebral bodies. Spinal changes include squaring of the vertebral bodies and fusion between adjacent levels. The fusion is secondary to syndesmophytes and resembles a bamboo stalk. This is most commonly found in ankylosing spondylitis.
Reference
Resnick D, Niwayama G.: Ankylosing Spondylitis. Resnick D. Bone and Joint Imaging, 1st Edition, Phyladelphia, Resnick D. W.B. Saunders 1989:299-319.
