Syndesmophytes are seen in -

Syndesmophytes Syndesmophytes are thin, slender vertical radiodense spicules bridging the vertebral bodies, giving the spine `bamboo' appearance. They are actually ossification of outer fibres of annulus fibrosus. Syndesmophytes are seen in : Ankylosing spondylitis Psoriatic arthritis Reiter's disease Arthritis associated with Inflammatory bowel disease