A Proposal for a New Classification of the Supernumerary Heads of the Biceps Brachii Muscle

Simple item page
dc.contributor.authorSzewczyk, Bartłomiej
dc.contributor.authorSañudo Tejero, José Ramón
dc.contributor.authorPodgórski, Michał
dc.contributor.authorZielinska, Nicol
dc.contributor.authorBettencourt Pires, Maria
dc.contributor.authorAragonés Maza, Paloma
dc.contributor.authorOlewnik, Lukasz
dc.date.accessioned2024-07-30T08:18:59Z
dc.date.available2024-07-30T08:18:59Z
dc.date.issued2022-04-22
dc.description.abstractIntroduction. The anterior compartment of the arm consists of three muscles: the biceps brachii (BB), brachialis, and coracobrachialis muscle. The aim of the present study was to characterize possible variations in the supernumerary heads of the biceps brachii and use these to prepare an accurate classification of the area that could be used for planning surgical procedures in the region. Material and Methods. One hundred (51 left and 49 right, 52 females and 48 males) upper limbs fixed in 10% formalin solution were examined. Results. Four types of supernumerary BB heads were identified, with subtypes. Type I was the most common type, characterized by the two heads (64%); this was subdivided into Type IA, with a single muscle belly, and Type IB with two muscle bellies. The second most common type was Type II, which was characterized by the three BB heads (26%). This type was divided into four subtypes (A-D): Type IIa characterized by attachment to the middle part of the shaft of the humerus; Type IIb characterized by the origin to the coracoid process together with the short head of the BB; Type IIc characterized by origin to the tendon of the pectoralis major muscle; and Type IId characterized by the attachment to the capsule of the humeral joint. The third most common type was Type III, which was characterized by four heads (6%); this was divided into Type IIIa, where two heads originated from the humerus bone, and Type IIIb, where one head originated from the short heads and the second from the long head of the BB. The rarest type was Type IV (4%) which was characterized by five heads: the short head originated from the coracoid process and the long head originated from the supraglenoid tubercle, the third and fourth head originated from the shaft of the humerus, while the fifth head originated from the pectoralis major muscle. Conclusion. The biceps brachii is characterized by very high morphological variability. The new classification proposes four types of supernumerary head arrangement (I-IV), divided into subtypes. This classification has both clinical and anatomical significance.
dc.description.departmentDepto. de Anatomía y Embriología
dc.description.facultyFac. de Medicina
dc.description.refereedTRUE
dc.description.statuspub
dc.identifier.citationSzewczyk B, Sanudo JR, Podgórski M, Zielinska N, Pires MB, Aragonés P, et al. A proposal for a new classification of the supernumerary heads of the biceps brachii muscle. Biomed Res Int [Internet]. 2022;2022:1–9. Available from: http://dx.doi.org/10.1155/2022/1510363
dc.identifier.doi10.1155/2022/1510363.
dc.identifier.essn2314-6141
dc.identifier.issn2314-6133
dc.identifier.officialurlhttps://doi.org/10.1155/2022/1510363
dc.identifier.relatedurlhttps://onlinelibrary.wiley.com/doi/10.1155/2022/1510363
dc.identifier.urihttps://hdl.handle.net/20.500.14352/107204
dc.issue.number2022
dc.journal.titleBioMed Research International
dc.language.isoeng
dc.page.final1510363
dc.page.initial1510363
dc.publisherWiley
dc.rightsAttribution 4.0 Internationalen
dc.rights.accessRightsopen access
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/
dc.subject.cdu611
dc.subject.keywordBiceps Brachii
dc.subject.keywordheads
dc.subject.ucmCiencias Biomédicas
dc.subject.unesco32 Ciencias Médicas
dc.titleA Proposal for a New Classification of the Supernumerary Heads of the Biceps Brachii Muscle
dc.typejournal article
dc.type.hasVersionVoR
dc.volume.number22
dspace.entity.typePublication
relation.isAuthorOfPublicationdcb63eb9-b997-4f0a-a8f3-5f8b72d9ea08
relation.isAuthorOfPublication1172e8b1-09b2-43ba-b674-13e9b2fd1f12
relation.isAuthorOfPublication.latestForDiscoverydcb63eb9-b997-4f0a-a8f3-5f8b72d9ea08
Download
Original bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
18. Proposal classification biceps brachii 2022.pdf
Size:
1.8 MB
Format:
Adobe Portable Document Format
downoload Download
Collections
Artículos