{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,15]],"date-time":"2026-07-15T16:09:23Z","timestamp":1784131763368,"version":"3.55.0"},"reference-count":14,"publisher":"Springer Science and Business Media LLC","issue":"1","license":[{"start":{"date-parts":[[2026,7,15]],"date-time":"2026-07-15T00:00:00Z","timestamp":1784073600000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0"},{"start":{"date-parts":[[2026,7,15]],"date-time":"2026-07-15T00:00:00Z","timestamp":1784073600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0"}],"funder":[{"DOI":"10.13039\/501100022075","name":"Universidade Federal Do Esp\u00edrito Santo","doi-asserted-by":"crossref","id":[{"id":"10.13039\/501100022075","id-type":"DOI","asserted-by":"crossref"}]}],"content-domain":{"domain":["link.springer.com"],"crossmark-restriction":false},"short-container-title":["Surg Radiol Anat"],"abstract":"<jats:title>Abstract<\/jats:title>\n                  <jats:sec>\n                    <jats:title>Objective<\/jats:title>\n                    <jats:p>The extensor digitorum brevis manus (EDBM) is an infrequent anatomical variation on the dorsum of the hand, with an estimated prevalence of 2%. Morphologically, type III is the rarest variant. The purpose of this study is to provide a detailed morphological description of a rare specimen of the EDBM, classified as type III, and to analyze its biomechanical implications and clinical relevance in the differential diagnosis.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Materials and methods<\/jats:title>\n                    <jats:p>A meticulous anatomical dissection was performed on the dorsal surface of the left hand of a male cadaver. Morphometric analysis was conducted using a digital caliper to record the precise dimensions of the muscle belly and its associated tendon.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results<\/jats:title>\n                    <jats:p>An accessory muscular structure was identified deep to the tendons of the extensor digitorum muscle, located medially to the extensor indicis muscle. The muscle originated from the dorsal radiocarpal ligament at the distal portion of the radius and inserted into the medial margin of the extensor expansion of the middle finger. This configuration corresponds to the type III variant by Ogura et al., which represents the rarest variant described in the literature.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusions<\/jats:title>\n                    <jats:p>The EDBM is a significant anatomical variation often misdiagnosed as a ganglion or synovial cyst due to lack of awareness among clinicians. Understanding its rarest subtypes, such as type III, is essential for improving clinical practices and surgical management thereby enhancing the quality of life for symptomatic patients.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1007\/s00276-026-03947-2","type":"journal-article","created":{"date-parts":[[2026,7,15]],"date-time":"2026-07-15T15:49:26Z","timestamp":1784130566000},"update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["A rare subtype of the extensor digitorum brevis manus muscle: description and clinical relevance"],"prefix":"10.1007","volume":"48","author":[{"ORCID":"https:\/\/orcid.org\/0009-0000-1406-5663","authenticated-orcid":false,"given":"Mateus Lacerda","family":"de Souza","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-0514-8170","authenticated-orcid":false,"given":"Josemberg","family":"da Silva Baptista","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"297","published-online":{"date-parts":[[2026,7,15]]},"reference":[{"issue":"8","key":"3947_CR1","doi-asserted-by":"publisher","first-page":"e1568","DOI":"10.7759\/cureus.1568","volume":"9","author":"R Shereen","year":"2017","unstructured":"Shereen R, Loukas M, Tubbs RS (2017) Extensor digitorum brevis manus: a comprehensive review of this variant muscle of the dorsal hand. Cureus 9(8):e1568. https:\/\/doi.org\/10.7759\/cureus.1568","journal-title":"Cureus"},{"key":"3947_CR2","doi-asserted-by":"publisher","first-page":"18","DOI":"10.1007\/s00276-024-03536-1","volume":"47","author":"G Triantafyllou","year":"2024","unstructured":"Triantafyllou G, Pi\u0105tkou MP, Paschopoulos I et al (2024) The extensor digitorum brevis manus variability and clinical significance: a systematic review with meta-analysis. Surg Radiol Anat 47:18. https:\/\/doi.org\/10.1007\/s00276-024-03536-1","journal-title":"Surg Radiol Anat"},{"key":"3947_CR3","doi-asserted-by":"publisher","first-page":"3","DOI":"10.1007\/s00276-014-1312-8","volume":"37","author":"K Yammine","year":"2015","unstructured":"Yammine K (2015) The prevalence of extensor digitorum brevis manus and its variants in humans: a systematic review and meta-analysis. Surg Radiol Anat 37:3\u20139. https:\/\/doi.org\/10.1007\/s00276-014-1312-8","journal-title":"Surg Radiol Anat"},{"key":"3947_CR4","doi-asserted-by":"publisher","first-page":"100","DOI":"10.1016\/S0363-5023(87)80171-5","volume":"12","author":"T Ogura","year":"1987","unstructured":"Ogura T, Inoue H, Tanabe G (1987) Anatomic and clinical studies of the extensor digitorum brevis manus. J Hand Surg Am 12:100\u2013107. https:\/\/doi.org\/10.1016\/S0363-5023(87)80171-5","journal-title":"J Hand Surg Am"},{"key":"3947_CR5","doi-asserted-by":"publisher","first-page":"61","DOI":"10.1055\/s-1999-13495","volume":"31","author":"H Hayashi","year":"1999","unstructured":"Hayashi H, Kojima T, Fukumoto K (1999) The fourth-compartment syndrome: its anatomical basis and clinical cases. Handchir Mikrochir Plast Chir 31:61\u201365. https:\/\/doi.org\/10.1055\/s-1999-13495","journal-title":"Handchir Mikrochir Plast Chir"},{"key":"3947_CR6","doi-asserted-by":"publisher","first-page":"286","DOI":"10.1002\/ca.10027","volume":"15","author":"M Rodr\u00edguez-Niedenf\u00fchr","year":"2002","unstructured":"Rodr\u00edguez-Niedenf\u00fchr M, V\u00e1zquez T, Golan\u00f3 P et al (2002) Extensor digitorum brevis manus: anatomical, radiological and clinical relevance. Clin Anat 15:286\u2013292. https:\/\/doi.org\/10.1002\/ca.10027","journal-title":"Clin Anat"},{"key":"3947_CR7","doi-asserted-by":"publisher","first-page":"674","DOI":"10.1016\/0363-5023(89)90190-1","volume":"14","author":"MR Patel","year":"1989","unstructured":"Patel MR, Desai SS, Bassini-Lipson L et al (1989) Painful extensor digitorum brevis manus muscle. J Hand Surg Am 14:674\u2013678. https:\/\/doi.org\/10.1016\/0363-5023(89)90190-1","journal-title":"J Hand Surg Am"},{"key":"3947_CR8","doi-asserted-by":"publisher","first-page":"1619","DOI":"10.1007\/s00276-021-02770-1","volume":"43","author":"KR Vaghela","year":"2021","unstructured":"Vaghela KR, Brownlie C, Edwards DS (2021) Finger abduction as a novel function of the extensor digitorum brevis manus muscle. Surg Radiol Anat 43:1619\u20131622. https:\/\/doi.org\/10.1007\/s00276-021-02770-1","journal-title":"Surg Radiol Anat"},{"key":"3947_CR9","first-page":"19","volume":"40","author":"K Oliveira","year":"2023","unstructured":"Oliveira K, Grecco L, Barbosa L et al (2023) The rare extensor digitorum brevis manus: an anatomical study in Brazilian cadavers. 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According to institutional regulations for anatomical studies using donated cadavers, formal ethics committee approval was not required.","order":2,"name":"Ethics","label":"Ethical approval","group":{"name":"EthicsHeading","label":"Declarations"}},{"value":"Not applicable.","order":3,"name":"Ethics","label":"Consent to participate","group":{"name":"EthicsHeading","label":"Declarations"}},{"value":"Not applicable.","order":4,"name":"Ethics","label":"Consent for publication","group":{"name":"EthicsHeading","label":"Declarations"}}],"article-number":"182"}}