title: Imaging shoulder impingement.
abstract: Appropriate imaging and clinical examinations may lead to early diagnosis and treatment of the shoulder impingement syndrome, thus preventing progression to a complete tear of the rotator cuff. In this article, we discuss the anatomic and pathophysiologic bases of the syndrome, and the rationale for certain imaging tests to evaluate it. Special radiographic projections to show the supraspinatus outlet and inferior surface of the anterior third of the acromion, combined with magnetic resonance images, usually provide the most useful information regarding the causes of impingement.
authors.affiliation: Department of Radiological Sciences, UCLA School of Medicine 90024-1721.
authors.forename: R H
authors.initials: RH
authors.lastname: Gold
authors.forename: L L
authors.initials: LL
authors.lastname: Seeger
authors.forename: L
authors.initials: L
authors.lastname: Yao
mesh_terms: D006801:Humans; D007592:Joint Diseases / Q000175:diagnosis / Q000000981:diagnostic imaging; D008279:Magnetic Resonance Imaging; D012785:Shoulder Joint / Q000000981:diagnostic imaging / Q000473:pathology; D014057:Tomography, X-Ray Computed; D014463:Ultrasonography