Question 2929
{"accessible":true,"alternatives":[{"id":14268,"text":"clothing artefact"},{"id":14269,"text":"linea aspera"},{"id":14270,"text":"osteomyelitis "},{"id":14271,"text":"osteonecrosis"},{"id":14272,"text":"Paget disease"},{"id":14273,"text":"stress fracture"}],"archived":false,"correctAlternativeId":14269,"explanation":"\u003cp\u003eThe \u003cstrong\u003elinea aspera\u003c/strong\u003e is a longitudinally-orientated ridge on the posterior aspect of the femur to which several muscles of the thigh attach. On lateral projections, prominence of the linea aspera may cause scalloping of the posterior femoral margin; this can mimic the radiographic appearance of osteonecrosis and periosteal reaction.\u003cbr\u003e\u003cbr\u003eIt is important to check the orientation of the lateral shoot through hip, as an incorrectly sent shoot through hip may give the appearance of an aggressive anterior periosteal reaction. \u003c/p\u003e","id":2929,"imageUrl":"https://prod-images-static.radiopaedia.org/multiple_choice_questions/1091/Square_template_copy.001_big_gallery.jpeg","imageAttribution":{"kind":"case","rID":48083},"imageAttributionCaseInfo":{"title":"Normal pelvis","contributor_name":"Andrew Murphy","contributor_param":"murf","case_rid":48083,"case_param":"normal-pelvis-1"},"firstQuestionPath":"/questions/2929","nextQuestionPath":null,"relatedArticles":[{"id":7662,"title":"Osteomyelitis","link":"/articles/osteomyelitis?lang=gb"},{"id":63818,"title":"Linea aspera","link":"/articles/linea-aspera?lang=gb"},{"id":1824,"title":"Paget disease (bone)","link":"/articles/paget-disease-bone?lang=gb"},{"id":7542,"title":"Stress fracture","link":"/articles/stress-fracture-2?lang=gb"}],"alsoUsedIn":[{"id":1784,"kind":"Course","title":"X-ray Interpretation: Pelvis \u0026 Hip Injuries - page 1784","link":"https://radiopaedia.org/courses/x-ray-interpretation-pelvis-hip-injuries/pages/1784"}],"stem":"\u003cp\u003eThe white arrows are highlighting...\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/2929"}],"attemptsPercentages":[{"alternativeId":"14271","percentage":1},{"alternativeId":"14269","percentage":82},{"alternativeId":"14273","percentage":4},{"alternativeId":"14268","percentage":6},{"alternativeId":"14272","percentage":4},{"alternativeId":"14270","percentage":4}],"promptToLogin":false,"questionManager":false,"articleId":"radiological-image-artifact"}