摘要
To the Editor:Enthesitis is an inflammation of the iliac attachment of ligaments or tendons.In spondyloarthropathies,peripheral enthesitis precedes joint symptoms and is associated with a higher degree of erosive disease.Four methods are available for evaluation of enthesitis,including tenderness,conventional radiography,ultrasonography,and magnetic resonance imaging(MRI).However,over 100 entheses are found in the human body.