Question 1955
{"accessible":false,"alternatives":[{"id":9730,"text":"L2"},{"id":9731,"text":"L3"},{"id":9732,"text":"L4"},{"id":9733,"text":"L5"}],"archived":false,"correctAlternativeId":9733,"explanation":"\u003cp\u003e\u003ca title=\"Spondylolysis\" class=\"internal\" href=\"/articles/spondylolysis\"\u003eSpondylolysis\u003c/a\u003e\u0026nbsp;is a defect in the\u0026nbsp;\u003ca href=\"https://radiopaedia.org/articles/pars-interarticularis?lang=gb\"\u003epars interarticularis\u003c/a\u003e\u0026nbsp;of the neural arch, the portion of the neural arch that connects the superior and inferior articular facets.\u003c/p\u003e\u003cul\u003e\n\u003cli\u003e~90% of cases of spondylolysis occur at the L5 level and ~10% occur at L4 level\u003c/li\u003e\n\u003cli\u003ethe process may be unilateral or bilateral\u003c/li\u003e\n\u003c/ul\u003e","id":1955,"imageUrl":null,"imageAttribution":null,"imageAttributionCaseInfo":null,"firstQuestionPath":"/questions/2974","nextQuestionPath":null,"relatedArticles":[{"id":12262,"title":"Spondylolysis","link":"/articles/spondylolysis?lang=us"}],"alsoUsedIn":[],"stem":"\u003cp\u003eWhat is the\u0026nbsp;most common location of spondylolysis?\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/1955"}],"attemptsPercentages":[{"alternativeId":"9733","percentage":77},{"alternativeId":"9730","percentage":2},{"alternativeId":"9732","percentage":18},{"alternativeId":"9731","percentage":3}],"promptToLogin":false,"questionManager":false,"articleId":"pars-interarticularis"}