'Superior biceps aponeurosis'-Morphological characteristics of the origin of the short head of the biceps brachii muscle

Annals of Anatomy = Anatomischer Anzeiger : Official Organ of the Anatomische Gesellschaft
Michał PodgórskiMirosław Topol

Abstract

Our aim was to characterize the morphology of the proximal attachment of the biceps brachii short head. We hypothesize that it has an aponeurotic component that may affect shoulder joint biomechanics. The coracoacromial region and the biceps brachii muscle were dissected in 30 cadaveric shoulders. The course and dimensions of the tendon and aponeurosis were evaluated. The cross-sectional area of the belly of the short head and the length of the whole muscle were measured. Correlations between the aponeurosis and dimensions of the muscle were tested with the Spearman's rank correlation coefficient. Aponeurosis was present in all specimens, although in 10 cases it was vestigial. The aponeurotic part of the muscle (mean length 90.7 ± 16.3 mm, mean width 12.5 ± 2.9 mm) branched off laterally and traveled to the acromion, blending with the coracoacromial ligament creating the aponeurotic membrane. We named this structure the "superior biceps aponeurosis". The mean length of the biceps brachii was 31.3 ± 2.1 cm and the mean cross-sectional area of the short head was 210.7 ± 54.3 mm2. The dimensions of the "superior biceps aponeurosis" correlated positively with the cross-sectional area of the muscle (R2 from 0.37 to 0.52, p from 0.01...Continue Reading

Citations

Jul 14, 2020·Surgical and Radiologic Anatomy : SRA·Nicol ZielinskaMichał Polguj
Feb 11, 2021·Surgical and Radiologic Anatomy : SRA·Bartłomiej SzewczykŁukasz Olewnik
Oct 18, 2020·Annals of Anatomy = Anatomischer Anzeiger : Official Organ of the Anatomische Gesellschaft·Nicol ZielinskaŁukasz Olewnik
Oct 1, 2021·Anatomical Science International·Nicol ZielinskaŁukasz Olewnik

❮ Previous
Next ❯

Related Concepts

Related Feeds

Biomechanics

Biomechanics examines the generation of internal forces within the body and investigates the effects and control of forces that act on or are produced on tissues. Here are the latest discoveries.

© 2022 Meta ULC. All rights reserved