Question 2979
{"accessible":false,"alternatives":[{"id":14495,"text":"corduroy sign"},{"id":14496,"text":"dagger sign"},{"id":14494,"text":"inverted napoleon hat sign"},{"id":14497,"text":"star sign"}],"archived":false,"correctAlternativeId":14494,"explanation":"\u003cp\u003eA vertebra that is tipped so that it is seen partially in the axial plane resembles Napolean's hat upside down. This is often the case in spondylolisthesis as the spine becomes hyperlordotic with anterior translation, tippling the lower lumber segments. It is most commonly seen at L5.\u003c/p\u003e","id":2979,"imageUrl":null,"imageAttribution":null,"imageAttributionCaseInfo":null,"firstQuestionPath":"/questions/2979","nextQuestionPath":null,"relatedArticles":[{"id":21329,"title":"Corduroy sign (vertebral hemangioma)","link":"/articles/corduroy-sign-vertebral-haemangioma?lang=us"},{"id":1200,"title":"Dagger sign (spine)","link":"/articles/dagger-sign-spine?lang=us"},{"id":68988,"title":"Facet joint arthropathy","link":"/articles/facet-joint-arthropathy?lang=us"}],"alsoUsedIn":[{"id":1959,"kind":"Course","title":"X-ray Interpretation: Lumbar Spine - page 1959","link":"https://radiopaedia.org/courses/x-ray-interpretation-lumbar-spine/pages/1959"}],"stem":"\u003cp\u003eWhich is a described sign of spondylolisthesis on a frontal lumbar radiograph?\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/2979"}],"attemptsPercentages":[{"alternativeId":"14495","percentage":6},{"alternativeId":"14496","percentage":9},{"alternativeId":"14497","percentage":3},{"alternativeId":"14494","percentage":82}],"promptToLogin":false,"questionManager":false,"articleId":"inverted-napoleon-hat-sign"}