Correlation of joint involvement in rheumatoid arthritis and in ankylosing spondylitis with the synovial: cartilaginous surface ratio of various joints.
D001172:Arthritis, Rheumatoid / Q000473:pathology*; D002358:Cartilage, Articular / Q000473:pathology*; D006801:Humans; D013167:Spondylitis, Ankylosing / Q000473:pathology*; D013583:Synovial Membrane / Q000473:pathology*