[Evaluation of the stages of severity of progressive chronic polyarthritis and ankylosing spondyloarthritis according to x-ray picture].
D000844:Ankylosis; D001168:Arthritis; D006801:Humans; D011859:Radiography; D013166:Spondylitis; D013167:Spondylitis, Ankylosing / Q000000981:diagnostic imaging*; D014965:X-Rays
SPONDYLITIS, ANKYLOSING/radiography