Question 687
{"accessible":false,"alternatives":[{"id":3455,"text":"extradural (epidural) hematomas"},{"id":3456,"text":"subarachnoid hematomas"},{"id":3457,"text":"subdural hematomas"},{"id":3458,"text":"subgaleal hematomas"}],"archived":false,"correctAlternativeId":3455,"explanation":"\u003cp\u003eThe morphology of extradural hematomas is best understood by reviewing their relationship to the bone and dura. An extradural hematoma is actually a subperiosteal hematoma located on the inside of the skull, between inner table of the skull and parietal layer of the dura mater (which is the periosteum). As a result, EDHs are usually limited in their extent by the cranial sutures, as the periosteum crosses through the suture continuous with the outer periosteal layer. This is, therefore, helpful in distinguishing EDHs from subdural hematomas, which are not limited by sutures.\u003c/p\u003e","id":687,"imageUrl":null,"imageAttribution":null,"imageAttributionCaseInfo":null,"firstQuestionPath":"/questions/2313","nextQuestionPath":"/articles/subdural-haemorrhage/questions/410","relatedArticles":[{"id":2119,"title":"Subarachnoid hemorrhage","link":"/articles/subarachnoid-haemorrhage?lang=us"},{"id":1309,"title":"Extradural hemorrhage","link":"/articles/extradural-haemorrhage?lang=us"},{"id":32666,"title":"Extradural hemorrhage (summary)","link":"/articles/extradural-haemorrhage-summary?lang=us"},{"id":40105,"title":"Extradural hematoma vs subdural hematoma","link":"/articles/extradural-haematoma-vs-subdural-haematoma?lang=us"}],"alsoUsedIn":[{"id":242,"kind":"Course","title":"Alfred ICU Teaching 2020","link":"https://radiopaedia.org/courses/alfred-icu-teaching-2020"},{"id":977,"kind":"RestrictedPage","title":"Page 977 (in no courses)","link":"https://radiopaedia.org/admin/restricted_pages/977"},{"id":976,"kind":"Course","title":"2021 Virtual Conference Private Use - 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Brisbane - page 1409","link":"https://radiopaedia.org/courses/emergency-radiology-course-brisbane-2022/pages/1409"}],"stem":"\u003cp\u003eSkull bone sutures typically hinder the extension of...\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/687"}],"attemptsPercentages":[{"alternativeId":"3455","percentage":92},{"alternativeId":"3457","percentage":6},{"alternativeId":"3456","percentage":1},{"alternativeId":"3458","percentage":1}],"promptToLogin":false,"questionManager":false,"articleId":"subdural-hemorrhage"}