Functional study of glenohumeral ligaments

Lamberto Felli, Luca Biglieni, Michele Fiore, Matteo Coviello, Roberto Borri, Maurizio Cutulo

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

Background: The glenohumeral ligaments are passive stabilising anatomical structures of the shoulder which, in synergy with the other active and passive stabilising structures, enable joint movement and cohesion. The purpose of this study is to analyse the isolated and synergic function of the glenohumeral ligaments by using a tetrapolar detection system with computer analysis. Methods: In a study performed on cadavers after anatomical dissection, detector electrodes were positioned on the individual ligaments and recordings were made of bioelectric impedance and, consequently, the resistance, which is an indicator of the state of tension or relaxation of the ligamentous complex. Predefined positions of the upper limb were adopted - neutral adduction, adduction with external rotation, abduction at 45° with neutral and external rotation, and abduction at 90° with neutral and external rotation. Results: The superior glenohumeral ligament is important in stabilisation of the glenohumeral joint in adduction and external rotation. The middle glenohumeral ligament is an important stabilising structure in the positions of adduction and external rotation and abduction up to 45° in external rotation. The resistance, and therefore tension, of the inferior glenohumeral ligament, which is negligible in positions of neutral adduction and adduction in external rotation, increases in value for angles between 45° and 90°, indicating the important stabilising function of this ligament in those positions. Conclusion: Our experimental study on cadavers, which involved evaluating the resistance of the glenohumeral ligaments by means of tetrapolar detection and computer analysis of the results, contributes to our knowledge of the functional activity of the anterior portion of the joint capsule.

Original languageEnglish
Pages (from-to)634-637
Number of pages4
JournalJournal of Orthopaedic Science
Volume17
Issue number5
DOIs
Publication statusPublished - Sep 2012

Fingerprint

Ligaments
Cadaver
Joint Capsule
Shoulder Joint
Computer Systems
Electric Impedance
Upper Extremity
Dissection
Electrodes
Joints

ASJC Scopus subject areas

  • Orthopedics and Sports Medicine

Cite this

Felli, L., Biglieni, L., Fiore, M., Coviello, M., Borri, R., & Cutulo, M. (2012). Functional study of glenohumeral ligaments. Journal of Orthopaedic Science, 17(5), 634-637. https://doi.org/10.1007/s00776-012-0261-5

Functional study of glenohumeral ligaments. / Felli, Lamberto; Biglieni, Luca; Fiore, Michele; Coviello, Matteo; Borri, Roberto; Cutulo, Maurizio.

In: Journal of Orthopaedic Science, Vol. 17, No. 5, 09.2012, p. 634-637.

Research output: Contribution to journalArticle

Felli, L, Biglieni, L, Fiore, M, Coviello, M, Borri, R & Cutulo, M 2012, 'Functional study of glenohumeral ligaments', Journal of Orthopaedic Science, vol. 17, no. 5, pp. 634-637. https://doi.org/10.1007/s00776-012-0261-5
Felli L, Biglieni L, Fiore M, Coviello M, Borri R, Cutulo M. Functional study of glenohumeral ligaments. Journal of Orthopaedic Science. 2012 Sep;17(5):634-637. https://doi.org/10.1007/s00776-012-0261-5
Felli, Lamberto ; Biglieni, Luca ; Fiore, Michele ; Coviello, Matteo ; Borri, Roberto ; Cutulo, Maurizio. / Functional study of glenohumeral ligaments. In: Journal of Orthopaedic Science. 2012 ; Vol. 17, No. 5. pp. 634-637.
@article{f339e41e3f474cbe841eac5a22c20e60,
title = "Functional study of glenohumeral ligaments",
abstract = "Background: The glenohumeral ligaments are passive stabilising anatomical structures of the shoulder which, in synergy with the other active and passive stabilising structures, enable joint movement and cohesion. The purpose of this study is to analyse the isolated and synergic function of the glenohumeral ligaments by using a tetrapolar detection system with computer analysis. Methods: In a study performed on cadavers after anatomical dissection, detector electrodes were positioned on the individual ligaments and recordings were made of bioelectric impedance and, consequently, the resistance, which is an indicator of the state of tension or relaxation of the ligamentous complex. Predefined positions of the upper limb were adopted - neutral adduction, adduction with external rotation, abduction at 45° with neutral and external rotation, and abduction at 90° with neutral and external rotation. Results: The superior glenohumeral ligament is important in stabilisation of the glenohumeral joint in adduction and external rotation. The middle glenohumeral ligament is an important stabilising structure in the positions of adduction and external rotation and abduction up to 45° in external rotation. The resistance, and therefore tension, of the inferior glenohumeral ligament, which is negligible in positions of neutral adduction and adduction in external rotation, increases in value for angles between 45° and 90°, indicating the important stabilising function of this ligament in those positions. Conclusion: Our experimental study on cadavers, which involved evaluating the resistance of the glenohumeral ligaments by means of tetrapolar detection and computer analysis of the results, contributes to our knowledge of the functional activity of the anterior portion of the joint capsule.",
author = "Lamberto Felli and Luca Biglieni and Michele Fiore and Matteo Coviello and Roberto Borri and Maurizio Cutulo",
year = "2012",
month = "9",
doi = "10.1007/s00776-012-0261-5",
language = "English",
volume = "17",
pages = "634--637",
journal = "Journal of Orthopaedic Science",
issn = "0949-2658",
publisher = "Springer Japan",
number = "5",

}

TY - JOUR

T1 - Functional study of glenohumeral ligaments

AU - Felli, Lamberto

AU - Biglieni, Luca

AU - Fiore, Michele

AU - Coviello, Matteo

AU - Borri, Roberto

AU - Cutulo, Maurizio

PY - 2012/9

Y1 - 2012/9

N2 - Background: The glenohumeral ligaments are passive stabilising anatomical structures of the shoulder which, in synergy with the other active and passive stabilising structures, enable joint movement and cohesion. The purpose of this study is to analyse the isolated and synergic function of the glenohumeral ligaments by using a tetrapolar detection system with computer analysis. Methods: In a study performed on cadavers after anatomical dissection, detector electrodes were positioned on the individual ligaments and recordings were made of bioelectric impedance and, consequently, the resistance, which is an indicator of the state of tension or relaxation of the ligamentous complex. Predefined positions of the upper limb were adopted - neutral adduction, adduction with external rotation, abduction at 45° with neutral and external rotation, and abduction at 90° with neutral and external rotation. Results: The superior glenohumeral ligament is important in stabilisation of the glenohumeral joint in adduction and external rotation. The middle glenohumeral ligament is an important stabilising structure in the positions of adduction and external rotation and abduction up to 45° in external rotation. The resistance, and therefore tension, of the inferior glenohumeral ligament, which is negligible in positions of neutral adduction and adduction in external rotation, increases in value for angles between 45° and 90°, indicating the important stabilising function of this ligament in those positions. Conclusion: Our experimental study on cadavers, which involved evaluating the resistance of the glenohumeral ligaments by means of tetrapolar detection and computer analysis of the results, contributes to our knowledge of the functional activity of the anterior portion of the joint capsule.

AB - Background: The glenohumeral ligaments are passive stabilising anatomical structures of the shoulder which, in synergy with the other active and passive stabilising structures, enable joint movement and cohesion. The purpose of this study is to analyse the isolated and synergic function of the glenohumeral ligaments by using a tetrapolar detection system with computer analysis. Methods: In a study performed on cadavers after anatomical dissection, detector electrodes were positioned on the individual ligaments and recordings were made of bioelectric impedance and, consequently, the resistance, which is an indicator of the state of tension or relaxation of the ligamentous complex. Predefined positions of the upper limb were adopted - neutral adduction, adduction with external rotation, abduction at 45° with neutral and external rotation, and abduction at 90° with neutral and external rotation. Results: The superior glenohumeral ligament is important in stabilisation of the glenohumeral joint in adduction and external rotation. The middle glenohumeral ligament is an important stabilising structure in the positions of adduction and external rotation and abduction up to 45° in external rotation. The resistance, and therefore tension, of the inferior glenohumeral ligament, which is negligible in positions of neutral adduction and adduction in external rotation, increases in value for angles between 45° and 90°, indicating the important stabilising function of this ligament in those positions. Conclusion: Our experimental study on cadavers, which involved evaluating the resistance of the glenohumeral ligaments by means of tetrapolar detection and computer analysis of the results, contributes to our knowledge of the functional activity of the anterior portion of the joint capsule.

UR - http://www.scopus.com/inward/record.url?scp=84868207758&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84868207758&partnerID=8YFLogxK

U2 - 10.1007/s00776-012-0261-5

DO - 10.1007/s00776-012-0261-5

M3 - Article

C2 - 22752207

AN - SCOPUS:84868207758

VL - 17

SP - 634

EP - 637

JO - Journal of Orthopaedic Science

JF - Journal of Orthopaedic Science

SN - 0949-2658

IS - 5

ER -