Question 830
{"accessible":false,"alternatives":[{"id":4199,"text":"axillary nerve"},{"id":4200,"text":"median nerve"},{"id":4201,"text":"musculocutaneous nerve"},{"id":4202,"text":"radial nerve"},{"id":4203,"text":"ulnar nerve"}],"archived":false,"correctAlternativeId":4200,"explanation":"\u003cp\u003eTwo layers form the carpal tunnel: a deep carpal arch and a superficial flexor retinaculum. The carpal arch is formed laterally by the scaphoid and trapezium tubercles. Medially, it is formed by the hook of hamate and the pisiform.\u003c/p\u003e\u003cp\u003eThe flexor retinaculum is the thick connective tissue that forms the roof of the carpal tunnel.\u003c/p\u003e\u003cp\u003eThe carpal tunnel contains a total of 9 tendons, surrounded by synovial sheaths, and the \u003cstrong\u003emedian nerve\u003c/strong\u003e.\u003c/p\u003e\u003cp\u003eThe tendons include that of flexor pollicis longus, four tendons of flexor digitorum profundus and four tendons of flexor digitorum superficialis.\u003c/p\u003e\u003cp\u003e\u003c/p\u003e","id":830,"imageUrl":null,"imageAttribution":null,"imageAttributionCaseInfo":null,"firstQuestionPath":"/questions/830","nextQuestionPath":null,"relatedArticles":[{"id":24692,"title":"Axillary nerve","link":"/articles/axillary-nerve?lang=us"},{"id":24691,"title":"Radial nerve","link":"/articles/radial-nerve-2?lang=us"},{"id":12632,"title":"Carpal tunnel syndrome","link":"/articles/carpal-tunnel-syndrome-1?lang=us"},{"id":24693,"title":"Musculocutaneous nerve","link":"/articles/musculocutaneous-nerve?lang=us"}],"alsoUsedIn":[{"id":397,"kind":"Course","title":"Medical Imaging Anatomy Course - Melbourne - page 397","link":"https://radiopaedia.org/courses/medical-imaging-anatomy-course-melbourne-2020/pages/397"},{"id":397,"kind":"Course","title":"Medical Imaging Anatomy Course - Melbourne - page 397","link":"https://radiopaedia.org/courses/medical-imaging-anatomy-course-melbourne-2019/pages/397"},{"id":397,"kind":"Course","title":"Medical Imaging Anatomy Webinars - page 397","link":"https://radiopaedia.org/courses/medical-imaging-anatomy-webinar-2022/pages/397"},{"id":397,"kind":"Course","title":"Medical Imaging Anatomy Course - page 397","link":"https://radiopaedia.org/courses/medical-imaging-anatomy-course-online/pages/397"},{"id":397,"kind":"Course","title":"Medical Imaging Anatomy Webinar Series - page 397","link":"https://radiopaedia.org/courses/medical-imaging-anatomy-webinar-series/pages/397"}],"stem":"\u003cp\u003eWhich nerve of the arm passes through the carpal tunnel?\u003c/p\u003e\u003cp\u003e\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/830"}],"attemptsPercentages":[{"alternativeId":"4202","percentage":3},{"alternativeId":"4199","percentage":1},{"alternativeId":"4200","percentage":93},{"alternativeId":"4203","percentage":2},{"alternativeId":"4201","percentage":0}],"promptToLogin":false,"questionManager":false,"articleId":"carpal-tunnel"}