Rheumatoid spondylitis; Ankylosing spondylitis; Spondylarthropathy
Spondylitis involves inflammation of one or more vertebrae. Ankylosing spondylitis is a chronic inflammatory disease that affects the joints between the vertebrae of the spine, and the joints between the spine and the pelvis. It eventually causes the affected vertebrae to fuse or grow together. (See Arthritis).
by Harutyun Medina, M.D.