{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,6]],"date-time":"2026-09-06T18:37:30Z","timestamp":1788719850480,"version":"build-2803163510"},"reference-count":21,"publisher":"Springer Science and Business Media LLC","issue":"3","license":[{"start":{"date-parts":[[2023,1,25]],"date-time":"2023-01-25T00:00:00Z","timestamp":1674604800000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0"},{"start":{"date-parts":[[2023,1,25]],"date-time":"2023-01-25T00:00:00Z","timestamp":1674604800000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0"}],"funder":[{"name":"Masaryk Hospital, Usti nad Labem","award":["IGA-KZ-2022-1-6"],"award-info":[{"award-number":["IGA-KZ-2022-1-6"]}]},{"DOI":"10.13039\/100007397","name":"Charles University","doi-asserted-by":"crossref","id":[{"id":"10.13039\/100007397","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><jats:sec>\n                <jats:title>Purpose<\/jats:title>\n                <jats:p>Knowledge of the unusual arrangement of the flexor pollicis longus (FPL) muscle is important as the variable tendon may be a rare cause of carpal tunnel syndrome.<\/jats:p>\n              <\/jats:sec><jats:sec>\n                <jats:title>Methods<\/jats:title>\n                <jats:p>During a routine dissection at the Department of Anatomy, an unusual formation of the FPL muscle was observed in a formalin embalmed Central European cadaver.<\/jats:p>\n              <\/jats:sec><jats:sec>\n                <jats:title>Results<\/jats:title>\n                <jats:p>This report presents a variation of the FPL muscle, where the muscle split and formed a separate accessory head inserting into the first lumbrical muscle. Moreover, a tendinous interconnection was present between the FPL muscle tendon and the tendon of the aberrant muscle head.<\/jats:p>\n              <\/jats:sec><jats:sec>\n                <jats:title>Conclusion<\/jats:title>\n                <jats:p>The cases described by previous literature, concerning the Linburg\u2013Comstock variation or the accessory head of the first lumbrical muscle originating from the FPL muscle, are closest to the present case. Such variation has a clinical significance ranging from the functional limitation of the thumb and index finger movement to the potential median nerve compression.<\/jats:p>\n              <\/jats:sec>","DOI":"10.1007\/s00276-023-03084-0","type":"journal-article","created":{"date-parts":[[2023,1,25]],"date-time":"2023-01-25T09:03:14Z","timestamp":1674637394000},"page":"271-275","update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":4,"title":["An accessory muscle belly or an accessory muscle head? An unusual arrangement of muscles in the anterior compartment of the forearm"],"prefix":"10.1007","volume":"45","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-5690-6800","authenticated-orcid":false,"given":"Kl\u00e1ra","family":"Gabr\u00edkov\u00e1","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-8150-9663","authenticated-orcid":false,"given":"David","family":"Kachl\u00edk","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-5715-3575","authenticated-orcid":false,"given":"Miroslav","family":"Belbl","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-3165-4977","authenticated-orcid":false,"given":"Vojt\u011bch","family":"Kunc","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"297","published-online":{"date-parts":[[2023,1,25]]},"reference":[{"issue":"1","key":"3084_CR1","doi-asserted-by":"publisher","first-page":"43","DOI":"10.21276\/aanat.2020.6.1.10","volume":"6","author":"KH Afroze","year":"2020","unstructured":"Afroze KH, Sangeeta MM, Varalakshmi KL (2020) Revisiting the morphological variations in lumbricals of Hand. Acad Anat Int 6(1):43\u201348. https:\/\/doi.org\/10.21276\/aanat.2020.6.1.10","journal-title":"Acad Anat Int"},{"issue":"1","key":"3084_CR2","doi-asserted-by":"publisher","first-page":"3","DOI":"10.5115\/acb.21.141","volume":"55","author":"A Asghar","year":"2022","unstructured":"Asghar A, Jha RK, Patra A, Chaudhary B, Singh B (2022) The prevalence and distribution of the variants of Gantzer\u2019s muscle: a meta-analysis of cadaveric studies. Anat Cell Biol 55(1):3\u201313. https:\/\/doi.org\/10.5115\/acb.21.141","journal-title":"Anat Cell Biol"},{"issue":"2","key":"3084_CR3","doi-asserted-by":"publisher","first-page":"515","DOI":"10.5603\/FM.a2021.0036","volume":"81","author":"A Gurvich","year":"2021","unstructured":"Gurvich A, Shridhar N, Felman A, Shi M, Pinkas A, Downie SA, Mishall PL (2021) A novel accessory muscle in the flexor compartment of anterior forearm inserting into the tenosynovium of the flexor pollicis longus. Folia Morphol (Warsz) 81(2):515\u2013519. https:\/\/doi.org\/10.5603\/FM.a2021.0036","journal-title":"Folia Morphol (Warsz)"},{"issue":"2","key":"3084_CR4","doi-asserted-by":"publisher","first-page":"160","DOI":"10.1002\/mus.25209","volume":"55","author":"MS Hur","year":"2017","unstructured":"Hur MS (2017) Variations of lumbrical muscle innervation patterns in the hand, focusing on the dual innervation of the third lumbrical muscle. Muscle Nerve 55(2):160\u2013165. https:\/\/doi.org\/10.1002\/mus.25209","journal-title":"Muscle Nerve"},{"key":"3084_CR5","doi-asserted-by":"publisher","first-page":"451","DOI":"10.1046\/j.1469-7580.1997.19130451.x","volume":"191","author":"M Jones","year":"1997","unstructured":"Jones M, Abrahams PH, Sanudo JR, Campillo M (1997) Incidence and morphology of accessory heads of flexor pollicis longus and flexor digitorum profundus (Gantzer\u2019s muscles). J Anat 191:451\u2013455. https:\/\/doi.org\/10.1046\/j.1469-7580.1997.19130451.x","journal-title":"J Anat"},{"issue":"4","key":"3084_CR6","doi-asserted-by":"publisher","first-page":"405","DOI":"10.1007\/s00276-016-1749-z","volume":"39","author":"D Kachlik","year":"2017","unstructured":"Kachlik D, Musil V, Baca V (2017) Contribution to the anatomical nomenclature concerning upper limb anatomy. Surgi Radiol Anat 39(4):405\u2013417. https:\/\/doi.org\/10.1007\/s00276-016-1749-z","journal-title":"Surgi Radiol Anat"},{"issue":"7","key":"3084_CR7","doi-asserted-by":"publisher","first-page":"768","DOI":"10.1016\/j.bjps.2006.01.003","volume":"59","author":"N Karalezli","year":"2006","unstructured":"Karalezli N, Karakose S, Haykir R, Yagisan N, Kacira B, Tuncay I (2006) Linburg-Comstock anomaly in musicians. J Plast Reconstr Aesthet Surg 59(7):768\u2013771. https:\/\/doi.org\/10.1016\/j.bjps.2006.01.003","journal-title":"J Plast Reconstr Aesthet Surg"},{"issue":"3","key":"3084_CR8","doi-asserted-by":"publisher","first-page":"465","DOI":"10.1046\/j.1469-7580.1997.19130465.x","volume":"191","author":"C Kopuz","year":"1997","unstructured":"Kopuz C, Fidan B, Islam A (1997) An unusually distal and complete additional flexor profundus muscle to the index finger. J Anat 191(3):465\u2013467. https:\/\/doi.org\/10.1046\/j.1469-7580.1997.19130465.x","journal-title":"J Anat"},{"issue":"5","key":"3084_CR9","doi-asserted-by":"publisher","first-page":"309","DOI":"10.1016\/j.neuchi.2012.05.002","volume":"58","author":"FMP Lecl\u00e8re","year":"2012","unstructured":"Lecl\u00e8re FMP, Unglaub F, Gohritz A, Hahn P (2012) Carpal tunnel syndrome caused by supernumerous lumbrical muscle in hemihyperplasia of the upper extremity. Neurochirurgie 58(5):309\u2013313. https:\/\/doi.org\/10.1016\/j.neuchi.2012.05.002","journal-title":"Neurochirurgie"},{"issue":"1","key":"3084_CR10","doi-asserted-by":"publisher","first-page":"79","DOI":"10.1016\/S0363-5023(79)80110-0","volume":"4","author":"RM Linburg","year":"1979","unstructured":"Linburg RM, Comstock BE (1979) Anomalous tendon slips from the flexor pollicis longus to the flexor digitorum profundus. J Hand Surg Am 4(1):79\u201383. https:\/\/doi.org\/10.1016\/S0363-5023(79)80110-0","journal-title":"J Hand Surg Am"},{"issue":"3","key":"3084_CR11","doi-asserted-by":"publisher","first-page":"325","DOI":"10.1016\/S0363-5023(88)80001-7","volume":"13","author":"RM Lombardi","year":"1988","unstructured":"Lombardi RM, Wood MB, Linscheid RL (1988) Symptomatic restrictive thumb-index flexor tenosynovitis: Incidence of musculotendinous anomalies and results of treatment. J Hand Surg Am 13(3):325\u2013328. https:\/\/doi.org\/10.1016\/S0363-5023(88)80001-7","journal-title":"J Hand Surg Am"},{"issue":"3","key":"3084_CR12","doi-asserted-by":"publisher","first-page":"227","DOI":"10.1002\/aja.1001090302","volume":"109","author":"HJ Metha","year":"1961","unstructured":"Metha HJ, Gardner WU (1961) A study of lumbrical muscles in the human hand. Am J Anat 109(3):227\u2013238. https:\/\/doi.org\/10.1002\/aja.1001090302","journal-title":"Am J Anat"},{"issue":"3","key":"3084_CR13","doi-asserted-by":"publisher","first-page":"310","DOI":"10.1016\/0266-7681(93)90048-K","volume":"18","author":"A Minami","year":"1993","unstructured":"Minami A, Sakai T (1993) Camptodactyly caused by abnormal insertion and origin of lumbrical muscle. J Hand Surg Br 18(3):310\u2013311. https:\/\/doi.org\/10.1016\/0266-7681(93)90048-K","journal-title":"J Hand Surg Br"},{"key":"3084_CR14","doi-asserted-by":"publisher","first-page":"227","DOI":"10.1007\/s00276-021-02858-8","volume":"44","author":"W Prasatkaew","year":"2022","unstructured":"Prasatkaew W, Kruepunga N, Yurasakpong L et al (2022) A reverse form of Linburg-Comstock variation with comments on its etiology and demonstration of interactive 3D portable document format. Surg Radiol Anat 44:227\u2013232. https:\/\/doi.org\/10.1007\/s00276-021-02858-8","journal-title":"Surg Radiol Anat"},{"key":"3084_CR15","doi-asserted-by":"publisher","DOI":"10.7717\/peerj.1255","volume":"2","author":"J Roy","year":"2015","unstructured":"Roy J, Henry BM, P\u0119kala PA, Vikse J, Ramakrishnan PK, Walocha JA, Tomaszewsko KA (2015) The prevalence and anatomical characteristics of the accessory head of the flexor pollicis longus muscle: a meta-analysis. PeerJ. 2:e1255. https:\/\/doi.org\/10.7717\/peerj.1255","journal-title":"PeerJ."},{"key":"3084_CR16","first-page":"107","volume":"6","author":"SP Sawant","year":"2013","unstructured":"Sawant SP (2013) The cadaveric study of lumbricals of hand in 100 specimens. Int J Curr Sci 6:107\u2013110","journal-title":"Int J Curr Sci"},{"issue":"4","key":"3084_CR17","doi-asserted-by":"publisher","first-page":"70","DOI":"10.4236\/fmar.2013.14015","volume":"1","author":"SR Shantakumar","year":"2013","unstructured":"Shantakumar SR, Sirasanagandla SR, Nayak SB, Gadahad MRK, Somayaji SN, Kumar N (2013) Multiple tendons of the additional belly of flexor pollicis longus in the carpal tunnel: embryological perspective and their clinical significance. For Med Anat Res 1(4):70\u201373. https:\/\/doi.org\/10.4236\/fmar.2013.14015","journal-title":"For Med Anat Res"},{"key":"3084_CR18","first-page":"229","volume":"15","author":"J Wood","year":"1866","unstructured":"Wood J (1866) Variations in human myology observed during the winter session of 1865\u201366 at King\u2019s college, London. Proc R Soc Lond 15:229\u2013244","journal-title":"Proc R Soc Lond"},{"key":"3084_CR19","doi-asserted-by":"publisher","first-page":"289","DOI":"10.1007\/s00276-017-1957-1","volume":"40","author":"K Yammine","year":"2018","unstructured":"Yammine K, Eri\u0107 M (2018) Linburg-Comstock variation and syndrome. A meta-analysis. Surg Radiol Anat 40:289\u2013296. https:\/\/doi.org\/10.1007\/s00276-017-1957-1","journal-title":"Surg Radiol Anat"},{"key":"3084_CR20","doi-asserted-by":"publisher","first-page":"297","DOI":"10.1007\/s00276-018-1985-5","volume":"40","author":"L Yurasakpong","year":"2018","unstructured":"Yurasakpong L, Meemon K, Suwannakhan A (2018) Linburg-Comstock variation: histoanatomy and classification of the connection between flexor pollicis longus and flexor digitorum profundus to the index finger. Surg Radiol Anat 40:297\u2013301. https:\/\/doi.org\/10.1007\/s00276-018-1985-5","journal-title":"Surg Radiol Anat"},{"key":"3084_CR21","doi-asserted-by":"publisher","first-page":"763","DOI":"10.1007\/s00276-021-02721-w","volume":"43","author":"N Zielinska","year":"2021","unstructured":"Zielinska N, Szewczyk B, Tubbs RS et al (2021) Coexistence of two accessory flexor pollicis longus heads or coexistence of two-headed flexor pollicis longus with an unrecognized anatomical structure? Surg Radiol Anat 43:763\u2013769. https:\/\/doi.org\/10.1007\/s00276-021-02721-w","journal-title":"Surg Radiol Anat"}],"container-title":["Surgical and Radiologic Anatomy"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/link.springer.com\/content\/pdf\/10.1007\/s00276-023-03084-0.pdf","content-type":"application\/pdf","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/link.springer.com\/article\/10.1007\/s00276-023-03084-0\/fulltext.html","content-type":"text\/html","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/link.springer.com\/content\/pdf\/10.1007\/s00276-023-03084-0.pdf","content-type":"application\/pdf","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2023,3,2]],"date-time":"2023-03-02T13:04:48Z","timestamp":1677762288000},"score":1,"resource":{"primary":{"URL":"https:\/\/link.springer.com\/10.1007\/s00276-023-03084-0"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2023,1,25]]},"references-count":21,"journal-issue":{"issue":"3","published-online":{"date-parts":[[2023,3]]}},"alternative-id":["3084"],"URL":"https:\/\/doi.org\/10.1007\/s00276-023-03084-0","relation":{},"ISSN":["1279-8517"],"issn-type":[{"value":"1279-8517","type":"electronic"}],"subject":[],"published":{"date-parts":[[2023,1,25]]},"assertion":[{"value":"1 October 2022","order":1,"name":"received","label":"Received","group":{"name":"ArticleHistory","label":"Article History"}},{"value":"12 January 2023","order":2,"name":"accepted","label":"Accepted","group":{"name":"ArticleHistory","label":"Article History"}},{"value":"25 January 2023","order":3,"name":"first_online","label":"First Online","group":{"name":"ArticleHistory","label":"Article History"}},{"order":1,"name":"Ethics","group":{"name":"EthicsHeading","label":"Declarations"}},{"value":"The authors declare that they have no conflict of interest.","order":2,"name":"Ethics","group":{"name":"EthicsHeading","label":"Conflict of interest"}},{"value":"All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and\/or national research committee and with the 1964 Helsinki Declaration and its later amendments or comparable ethical standards.","order":3,"name":"Ethics","group":{"name":"EthicsHeading","label":"Ethical approval"}}]}}