Ankylosing spondylitis, hip disease

Ankylosing spondylitis, sacroiliac joint disease

Chronic dens fracture

Hydatid cysts of the sacrum, ileum and L5

Hyperflexion injury with a clay-shoveler fracture

Ivory vertebra, metastatic prostate carcinoma

Klippel-Feil

Neurofibromatosis type 1

Paget disease of the lumbar spine and pelvis

Pancoast tumor

Scheuermann disease

Tethered cord