open access

Vol 74, No 4 (2015)
ORIGINAL ARTICLES
Published online: 2015-11-27
Submitted: 2014-11-11
Accepted: 2015-01-18
Get Citation

Macro/micro observational studies of fibres maintaining the biceps brachii tendon in the bicipital groove: application to surgery, pathology and kinesiology

R. Singh, M. Singla, R. S. Tubbs
DOI: 10.5603/FM.2015.0105
·
Pubmed: 26620503
·
Folia Morphol 2015;74(4):439-446.

open access

Vol 74, No 4 (2015)
ORIGINAL ARTICLES
Published online: 2015-11-27
Submitted: 2014-11-11
Accepted: 2015-01-18

Abstract

Background: There is controversy over the nature of tissues covering the bicipital groove protecting the biceps brachii tendon from dislocation/subluxation causing shoulder pain. Recent researches on cadaveric dissection and histological studies have changed the old concept of the transverse humeral ligament covering the bicipital groove to tendinous fibres of the subscapularis or interdigitating fibres of the subscapularis and supraspinatus. The change has not been incorporated into standard text books of anatomy. Therefore, the aim of the study is to support the new or old concept.

Materials and methods: Eighteen embalmed shoulders were dissected to determine the nature of the tissues over the bicipital groove. Tissues from 4 shoulders were processed and 16 histological slides were examined for fibre types. Theoretical analysis of ligament and tendon has also been carried out.

Results: The dissection study revealed that the tissues over the bicipital groove were tendinous fibres of subscapularis/interdigitating fibres of the subscapularis and supraspinatus and fibrous expansions from the posterior lamina of the pectoralis major. This was supported by the histological slides which showed the signatures of collagen fibres with the characteristics of tendinous fibres.

Conclusions: No separate anatomical entity such as the transverse humeral ligament was detected in this study. Thus present study supports the view that the tissues covering the bicipital groove were formed by tendinous rather than ligamentous fibres.

Abstract

Background: There is controversy over the nature of tissues covering the bicipital groove protecting the biceps brachii tendon from dislocation/subluxation causing shoulder pain. Recent researches on cadaveric dissection and histological studies have changed the old concept of the transverse humeral ligament covering the bicipital groove to tendinous fibres of the subscapularis or interdigitating fibres of the subscapularis and supraspinatus. The change has not been incorporated into standard text books of anatomy. Therefore, the aim of the study is to support the new or old concept.

Materials and methods: Eighteen embalmed shoulders were dissected to determine the nature of the tissues over the bicipital groove. Tissues from 4 shoulders were processed and 16 histological slides were examined for fibre types. Theoretical analysis of ligament and tendon has also been carried out.

Results: The dissection study revealed that the tissues over the bicipital groove were tendinous fibres of subscapularis/interdigitating fibres of the subscapularis and supraspinatus and fibrous expansions from the posterior lamina of the pectoralis major. This was supported by the histological slides which showed the signatures of collagen fibres with the characteristics of tendinous fibres.

Conclusions: No separate anatomical entity such as the transverse humeral ligament was detected in this study. Thus present study supports the view that the tissues covering the bicipital groove were formed by tendinous rather than ligamentous fibres.

Get Citation

Keywords

bicipital groove, subscapularis, collagen fibres, subluxation, biceps tendon

About this article
Title

Macro/micro observational studies of fibres maintaining the biceps brachii tendon in the bicipital groove: application to surgery, pathology and kinesiology

Journal

Folia Morphologica

Issue

Vol 74, No 4 (2015)

Pages

439-446

Published online

2015-11-27

DOI

10.5603/FM.2015.0105

Pubmed

26620503

Bibliographic record

Folia Morphol 2015;74(4):439-446.

Keywords

bicipital groove
subscapularis
collagen fibres
subluxation
biceps tendon

Authors

R. Singh
M. Singla
R. S. Tubbs

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