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Medbullets - Ankylosing spondylitis is a chronic inflammatory disorder that primarily affects the sacroiliac joint and spine. It most commonly affects males 15-35 years of age, and is strongly associated with the
![Welcome to LearningRadiology - radiology, radiologic, imaging, sign, signs, list, radiographic, xray, x-ray, gi, gu, chest, thoracic, teaching, website, web, site, best, image, student, medical, jpg, jpeg Welcome to LearningRadiology - radiology, radiologic, imaging, sign, signs, list, radiographic, xray, x-ray, gi, gu, chest, thoracic, teaching, website, web, site, best, image, student, medical, jpg, jpeg](http://learningradiology.com/radsigns/radsignsphotos/trolley%20track-R3.jpg)