Radiological study of sacro-iliac joints in ankylosing spondylitis with reference to the evolution of the disease.
D000844:Ankylosis; D006801:Humans; D012446:Sacroiliac Joint / Q000473:pathology*; D013166:Spondylitis; D013167:Spondylitis, Ankylosing / Q000473:pathology*
SACROILIAC JOINT/pathology; SPONDYLITIS, ANKYLOSING/pathology