Question 2550
{"accessible":false,"alternatives":[{"id":12506,"text":"Böhler angle of 30°"},{"id":12507,"text":"medial clear space of 8 mm"},{"id":12508,"text":"tibiofibular clear space of 4 mm"},{"id":12509,"text":"tibiofibular overlap of 3 mm"}],"archived":false,"correctAlternativeId":12507,"explanation":"\u003cp\u003eThe medial clear space is considered \u003cstrong\u003eabnormal\u003c/strong\u003e if the horizontal distance is \u003cstrong\u003e\u0026gt;4-5 mm\u003c/strong\u003e.\u003c/p\u003e\u003cp\u003e8mm would be notably wide and indicative of a deltoid ligament injury.\u003c/p\u003e\u003cul\u003e\n\u003cli\u003e\u003cp\u003eBöhler angle should be between 25° and 40°\u003c/p\u003e\u003c/li\u003e\n\u003cli\u003e\u003cp\u003etibiofibular clear space: 4.6 mm (AP) and 4.3 mm (mortice)\u003c/p\u003e\u003c/li\u003e\n\u003cli\u003e\u003cp\u003etibiofibular overlap: equal to or less than 6mm\u003c/p\u003e\u003c/li\u003e\n\u003c/ul\u003e","id":2550,"imageUrl":null,"imageAttribution":null,"imageAttributionCaseInfo":null,"firstQuestionPath":"/questions/2550","nextQuestionPath":"/articles/tibiofibular-clear-space/questions/1839","relatedArticles":[{"id":1002,"title":"Böhler angle","link":"/articles/bohler-angle-2?lang=us"},{"id":77885,"title":"Tibiofibular overlap","link":"/articles/tibiofibular-overlap?lang=us"},{"id":77887,"title":"Medial clear space (ankle)","link":"/articles/medial-clear-space-ankle?lang=us"}],"alsoUsedIn":[{"id":1420,"kind":"Course","title":"Emergency Radiology Course - Brisbane - page 1420","link":"https://radiopaedia.org/courses/emergency-radiology-course-brisbane-2022/pages/1420"},{"id":2021,"kind":"Course","title":"X-ray Interpretation: Foot \u0026 Ankle Injuries Peer Review - page 2021","link":"https://radiopaedia.org/courses/x-ray-interpretation-foot-ankle-injuries-peer-review/pages/2021"},{"id":2021,"kind":"Course","title":"X-ray Interpretation: Foot \u0026 Ankle Injuries - page 2021","link":"https://radiopaedia.org/courses/x-ray-interpretation-foot-ankle-injuries/pages/2021"}],"stem":"\u003cp\u003eWhich would \u003cstrong\u003eNOT\u003c/strong\u003e be a normal expected measurement on an ankle radiograph of an adult?\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/2550"}],"attemptsPercentages":[{"alternativeId":"12509","percentage":5},{"alternativeId":"12508","percentage":5},{"alternativeId":"12507","percentage":86},{"alternativeId":"12506","percentage":4}],"promptToLogin":false,"questionManager":false,"articleId":"tibiofibular-clear-space"}