their secondary indications include the demonstration of fluid effusions in the hip , the precise evaluation of hyperostotic lesions in the same joint , the detection of ossification phenomena in the capsule of the inter-apophyseal joints in ankylosing spondylitis and , in some cases , following negative or doubtful arthrography for the detection of synovial plica .
C0022417
joint
C0038013
ankylosing spondylitis