Eighteen bone scintisans performed in 14 patients with ankylosing spon
dylitis were reviewed. In young patients with low back pain, positive
serology, and indeterminate radiographs, quantitative sacroiliac joint
assessment and the presence of typical uptake patterns, particularly
costovertebral, were useful in suggesting the diagnosis. Scintigraphy
was helpful in the early detection of pseudoarthrosis complicating lon
g-standing disease, especially in patients presenting with recurrent b
ack pain. Selective application of bone scintigraphy aids the diagnosi
s of ankylosing spondylitis and its potential complications. (C) Elsev
ier Science Inc., 1997.