{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,5,1]],"date-time":"2026-05-01T19:13:34Z","timestamp":1777662814227,"version":"3.51.4"},"reference-count":8,"publisher":"SAGE Publications","issue":"5","license":[{"start":{"date-parts":[[2025,9,14]],"date-time":"2025-09-14T00:00:00Z","timestamp":1757808000000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/journals.sagepub.com\/page\/policies\/text-and-data-mining-license"}],"content-domain":{"domain":["journals.sagepub.com"],"crossmark-restriction":true},"short-container-title":["Hand (New York, N,Y.)"],"published-print":{"date-parts":[[2026,5]]},"abstract":"<jats:p>The radial nerve typically innervates the posterior compartment muscles of the arm and forearm, while the biceps brachii is innervated by the musculocutaneous nerve. We report a novel case of radial nerve innervation to the biceps brachii in a 27-year-old woman, identified during surgical fixation of a left humeral shaft fracture. Intraoperative exploration revealed an anomalous branch from the radial nerve to the biceps brachii. Postoperative nerve conduction studies confirmed its functionality, with compound muscle action potentials (CMAP) recorded from the biceps brachii following radial nerve stimulation (latency: 2.3 ms, amplitude: 0.26 mV). Comparatively, musculocutaneous nerve stimulation produced a stronger response (latency: 3.45 ms, amplitude: 2.66 mV), indicating its primary role in biceps innervation. Reduced CMAP amplitudes in the triceps and extensor digitorum communis suggested possible mild radial nerve injury related to the fracture. This anatomical variation may provide compensatory innervation in musculocutaneous nerve injuries, highlighting its clinical relevance in upper limb surgery and electrophysiological assessments.<\/jats:p>","DOI":"10.1177\/15589447251366673","type":"journal-article","created":{"date-parts":[[2025,9,15]],"date-time":"2025-09-15T02:42:56Z","timestamp":1757904176000},"update-policy":"https:\/\/doi.org\/10.1177\/sage-journals-update-policy","source":"Crossref","is-referenced-by-count":0,"title":["Anomalous Radial Nerve Innervation to the Biceps Brachii: A Case Report With Electrophysiological Confirmation"],"prefix":"10.1177","volume":"21","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-6481-0227","authenticated-orcid":false,"given":"Seyed Houssein","family":"Saeed-Banadaky","sequence":"first","affiliation":[{"name":"Shahid Sadoughi University of Medical Sciences, Yazd, Iran"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0009-0006-8333-4226","authenticated-orcid":false,"given":"Milad","family":"Gholizadeh","sequence":"additional","affiliation":[{"name":"Shahid Sadoughi University of Medical Sciences, Yazd, Iran"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"179","published-online":{"date-parts":[[2025,9,14]]},"reference":[{"key":"e_1_3_2_2_2","doi-asserted-by":"publisher","DOI":"10.1016\/j.otsr.2021.103194"},{"key":"e_1_3_2_3_2","doi-asserted-by":"publisher","DOI":"10.1007\/s00276-023-03166-z"},{"key":"e_1_3_2_4_2","doi-asserted-by":"publisher","DOI":"10.1016\/j.aanat.2016.07.007"},{"key":"e_1_3_2_5_2","doi-asserted-by":"publisher","DOI":"10.1002\/mus.23741"},{"key":"e_1_3_2_6_2","first-page":"764","article-title":"Anatomical study of the motor branches of the radial nerve in the forearm","volume":"55","author":"Caetano EB","year":"2021","unstructured":"Caetano EB, Vieira LA, Sabongi Neto JJ, Caetano MBF, Picin CP, Silva J\u00fanior LCND. Anatomical study of the motor branches of the radial nerve in the forearm. Revista Brasileira De Ortopedia. 2021;55:764-770.","journal-title":"Revista Brasileira De Ortopedia"},{"key":"e_1_3_2_7_2","doi-asserted-by":"publisher","DOI":"10.1002\/ca.22115"},{"key":"e_1_3_2_8_2","first-page":"39","article-title":"Bilateral absence of musculocutaneous nerve with unusual communicating branch between radial and ulnar nerves","volume":"9","author":"Candan B","year":"2016","unstructured":"Candan B, Ozturk K, Albay S. Bilateral absence of musculocutaneous nerve with unusual communicating branch between radial and ulnar nerves. Int J Anat Var. 2016;9:39-42.","journal-title":"Int J Anat Var"},{"key":"e_1_3_2_9_2","doi-asserted-by":"publisher","DOI":"10.1002\/mus.27221"}],"container-title":["HAND"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/journals.sagepub.com\/doi\/pdf\/10.1177\/15589447251366673","content-type":"application\/pdf","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/journals.sagepub.com\/doi\/full-xml\/10.1177\/15589447251366673","content-type":"application\/xml","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/journals.sagepub.com\/doi\/pdf\/10.1177\/15589447251366673","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2026,4,29]],"date-time":"2026-04-29T07:30:21Z","timestamp":1777447821000},"score":1,"resource":{"primary":{"URL":"https:\/\/journals.sagepub.com\/doi\/10.1177\/15589447251366673"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2025,9,14]]},"references-count":8,"journal-issue":{"issue":"5","published-print":{"date-parts":[[2026,5]]}},"alternative-id":["10.1177\/15589447251366673"],"URL":"https:\/\/doi.org\/10.1177\/15589447251366673","relation":{},"ISSN":["1558-9447","1558-9455"],"issn-type":[{"value":"1558-9447","type":"print"},{"value":"1558-9455","type":"electronic"}],"subject":[],"published":{"date-parts":[[2025,9,14]]}}}