Question 2692
{"accessible":false,"alternatives":[{"id":13172,"text":"CT hip"},{"id":13173,"text":"frog-leg lateral"},{"id":13174,"text":"MRI pelvis"},{"id":13175,"text":"no further imaging"},{"id":13176,"text":"turned lateral of the hip"}],"archived":false,"correctAlternativeId":13173,"explanation":"\u003cp\u003eIf the clinical suspicion is of a slipped upper femoral epiphysis, confirming that radiologically is required. If the AP pelvis is normal, then a frog-leg lateral will often confirm the diagnosis. In some cases, it will also demonstrated bilateral disease that wasn't suspected clinically.\u003c/p\u003e\u003cp\u003eIn severe cases, CT can be used to determine screw placement and work out whether the slip needs to be reduced prior to fixation. MRI can be used to help prognosticate in severe cases too; post-contrast imaging can help determine the likelihood of future avascular necrosis.\u003c/p\u003e","id":2692,"imageUrl":null,"imageAttribution":null,"imageAttributionCaseInfo":null,"firstQuestionPath":"/questions/2692","nextQuestionPath":null,"relatedArticles":[{"id":2056,"title":"Slipped upper femoral epiphysis","link":"/articles/slipped-upper-femoral-epiphysis?lang=us"}],"alsoUsedIn":[{"id":1485,"kind":"Course","title":"2023 Virtual Conference Private Use - page 1485","link":"https://radiopaedia.org/courses/2023-virtual-conference-private-use/pages/1485"},{"id":1485,"kind":"Course","title":"Paediatric Lectures - page 1485","link":"https://radiopaedia.org/courses/paediatric-lectures/pages/1485"},{"id":1726,"kind":"Course","title":"2023 Virtual Conference Private Use - page 1726","link":"https://radiopaedia.org/courses/2023-virtual-conference-private-use/pages/1726"},{"id":365,"kind":"LiveSchedule","title":"365","link":"https://radiopaedia.org/admin/live_schedules/365"},{"id":280,"kind":"LiveSchedule","title":"280","link":"https://radiopaedia.org/admin/live_schedules/280"},{"id":1794,"kind":"Course","title":"X-ray Interpretation: Pelvis \u0026 Hip Injuries - page 1794","link":"https://radiopaedia.org/courses/x-ray-interpretation-pelvis-hip-injuries/pages/1794"}],"stem":"\u003cp\u003eA 14-year-old attends ED unable to weight-bear with no traumatic history. The clinical team suspect a slipped upper femoral epiphysis and an AP X-ray is performed. It is not clear whether there is a slip on the AP x-ray. What is the next best test to perform?\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/2692"}],"attemptsPercentages":[{"alternativeId":"13174","percentage":6},{"alternativeId":"13176","percentage":11},{"alternativeId":"13172","percentage":5},{"alternativeId":"13175","percentage":0},{"alternativeId":"13173","percentage":77}],"promptToLogin":false,"questionManager":false,"articleId":"slipped-upper-femoral-epiphysis-grading"}