Question 1403
{"accessible":true,"alternatives":[{"id":6993,"text":"acromioclavicular joint injury type IV"},{"id":6994,"text":"fracture of the acromion process type II"},{"id":6995,"text":"lateral clavicular fracture "},{"id":6996,"text":"normal growth plates of the proximal humerus"},{"id":6997,"text":"unfused accessory centre of ossification of the acromion"}],"archived":false,"correctAlternativeId":6997,"explanation":"\u003cp\u003eThis is an\u0026nbsp;\u003cstrong\u003eos acromiale\u003c/strong\u003e,\u0026nbsp;an\u0026nbsp;anatomical variant\u0026nbsp;that\u0026nbsp;represents an unfused\u0026nbsp;accessory centre of ossification\u0026nbsp;of the\u0026nbsp;acromion\u0026nbsp;of the\u0026nbsp;scapula.\u0026nbsp;They are relatively common, seen in ~8% (range 1-15%) of the population, and can be bilateral in 60% of individuals.\u003c/p\u003e","id":1403,"imageUrl":"https://prod-images-static.radiopaedia.org/images/574849/6f844566d92059b079fd92f901a041_big_gallery.jpg","imageAttribution":{"kind":"case","rID":11697},"imageAttributionCaseInfo":{"title":"Os acromiale","contributor_name":"The Radswiki","contributor_param":"radswiki","case_rid":11697,"case_param":"os-acromiale"},"firstQuestionPath":"/questions/1403","nextQuestionPath":"/articles/physis/questions/887","relatedArticles":[{"id":1783,"title":"Os acromiale","link":"/articles/os-acromiale?lang=gb"},{"id":1132,"title":"Clavicular fracture","link":"/articles/clavicular-fracture?lang=gb"},{"id":845,"title":"Rockwood classification of acromioclavicular joint injury","link":"/articles/rockwood-classification-of-acromioclavicular-joint-injury?lang=gb"},{"id":72429,"title":"Acromion fracture","link":"/articles/acromion-fracture?lang=gb"}],"alsoUsedIn":[{"id":522,"kind":"Course","title":"X-ray Interpretation: Shoulder Injuries - page 522","link":"https://radiopaedia.org/courses/x-ray-interpretation-shoulder-injuries/pages/522"},{"id":522,"kind":"Course","title":"X-ray Interpretation: Upper Limb Injuries - page 522","link":"https://radiopaedia.org/courses/x-ray-interpretation-upper-limb-injuries/pages/522"}],"stem":"\u003cp\u003eThe following axial projection demonstrates a/an...\u003c/p\u003e","menuLinks":[{"text":"Report problem with question","url":"https://docs.google.com/forms/d/e/1FAIpQLSfO3soWYhOjJ7yErSysyCe5V4A1CqW7WK3rDA7MtAkecMGqNw/viewform?entry.1624461248\u0026entry.553583435=https://radiopaedia.org/questions/1403"}],"attemptsPercentages":[{"alternativeId":"6994","percentage":15},{"alternativeId":"6995","percentage":2},{"alternativeId":"6996","percentage":4},{"alternativeId":"6993","percentage":4},{"alternativeId":"6997","percentage":76}],"promptToLogin":false,"questionManager":false,"articleId":"physis"}