Question 1370
{"accessible":false,"alternatives":[{"id":6830,"text":"type 1"},{"id":6831,"text":"type 2"},{"id":6832,"text":"type 3"},{"id":6833,"text":"type 4"},{"id":6834,"text":"type 5"}],"archived":false,"correctAlternativeId":6833,"explanation":"\u003cp\u003e\u003cstrong\u003eRockwood type IV injuries \u003c/strong\u003eare where the\u0026nbsp;clavicle displaced posterior into the trapezius.\u003c/p\u003e\u003cp\u003eIt also possesses the following features\u0026nbsp;\u003c/p\u003e\u003cul\u003e\n\u003cli\u003eAC ligament: ruptured\u003c/li\u003e\n\u003cli\u003eCC ligament: ruptured\u003c/li\u003e\n\u003cli\u003ejoint capsule: ruptured\u003c/li\u003e\n\u003cli\u003edeltoid muscle: detached\u003c/li\u003e\n\u003cli\u003etrapezius muscle: detached\u003c/li\u003e\n\u003c/ul\u003e","id":1370,"imageUrl":null,"imageAttribution":null,"imageAttributionCaseInfo":null,"firstQuestionPath":"/questions/1994","nextQuestionPath":"/articles/acromioclavicular-joint-injury-1/questions/220","relatedArticles":[{"id":845,"title":"Rockwood classification of acromioclavicular joint injury","link":"/articles/rockwood-classification-of-acromioclavicular-joint-injury?lang=us"}],"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\u003eWhich\u0026nbsp;Rockwood type would an acromioclavicular joint injury\u0026nbsp;be if the clavicle displaced posterior into the trapezius?\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/1370"}],"attemptsPercentages":[{"alternativeId":"6830","percentage":1},{"alternativeId":"6831","percentage":3},{"alternativeId":"6832","percentage":12},{"alternativeId":"6833","percentage":68},{"alternativeId":"6834","percentage":17}],"promptToLogin":false,"questionManager":false,"articleId":"acromioclavicular-joint-injury"}