Question 1851
{"accessible":true,"alternatives":[{"id":9191,"text":"stage 0"},{"id":9192,"text":"stage I"},{"id":9193,"text":"stage II"},{"id":9194,"text":"stage III"},{"id":9195,"text":"stage IV"}],"archived":false,"correctAlternativeId":9194,"explanation":"\u003cp\u003eThis AP radiograph of the left hip shows:\u003c/p\u003e\u003cul\u003e\n\u003cli\u003e\u003cp\u003ean\u0026nbsp;ill-defined mixed sclerotic/lytic lesion of the left femoral head\u003c/p\u003e\u003c/li\u003e\n\u003cli\u003e\u003cp\u003efocal cortical collapse of the superior aspect of the femoral head\u003c/p\u003e\u003c/li\u003e\n\u003cli\u003e\u003cp\u003ea linear subchondral lucency \"\u003ca href=\"https://radiopaedia.org/articles/crescent-sign-of-avascular-necrosis-1?lang=gb\"\u003ecrescent sign\u003c/a\u003e\"\u003c/p\u003e\u003c/li\u003e\n\u003cli\u003e\u003cp\u003eno evidence of secondary degenerative changes\u003c/p\u003e\u003c/li\u003e\n\u003c/ul\u003e\u003cp\u003eThese radiographic findings are those of stage III according to\u0026nbsp;the Ficat and Arlet classification\u0026nbsp;of osteonecrosis of femoral head.\u003c/p\u003e","id":1851,"imageUrl":"https://prod-images-static.radiopaedia.org/multiple_choice_questions/337/avascular-necrosis-of-femoral-head_big_gallery.jpeg","imageAttribution":{"kind":"case","rID":44390},"imageAttributionCaseInfo":{"title":"Avascular necrosis of femoral head","contributor_name":"Ivan Turkalj","contributor_param":"turkaljivan","case_rid":44390,"case_param":"avascular-necrosis-of-femoral-head"},"firstQuestionPath":"/questions/1851","nextQuestionPath":null,"relatedArticles":[{"id":951,"title":"Ficat and Arlet classification of osteonecrosis of the femoral head","link":"/articles/ficat-and-arlet-classification-of-osteonecrosis-of-the-femoral-head?lang=gb"},{"id":7225,"title":"Crescent sign (osteonecrosis)","link":"/articles/crescent-sign-osteonecrosis?lang=gb"},{"id":950,"title":"Osteonecrosis","link":"/articles/osteonecrosis-2?lang=gb"}],"alsoUsedIn":[],"stem":"\u003cp\u003eWhich stage of osteonecrosis of the femoral head is shown on this radiograph according to\u0026nbsp;the Ficat and Arlet classification?\u003c/p\u003e\u003cp\u003e\u0026nbsp;\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/1851"}],"attemptsPercentages":[{"alternativeId":"9195","percentage":5},{"alternativeId":"9191","percentage":1},{"alternativeId":"9192","percentage":7},{"alternativeId":"9193","percentage":32},{"alternativeId":"9194","percentage":55}],"promptToLogin":false,"questionManager":false,"articleId":"osteonecrosis-of-the-femoral-head"}