Structural and mechanical properties of the glenohumeral joint posterior capsule

The purpose of this study was to quantify regional variations in material properties of the glenohumeral joint posterior capsule and to compare these data with the anterior band of the inferior glenohumeral ligament (AB-IGHL). Mechanical properties were determined for individual bands of the AB-IGHL...

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Bibliographic Details
Published in:Journal of shoulder and elbow surgery 2005-03, Vol.14 (2), p.201-206
Main Authors: Bey, Michael J., Hunter, Shawn A., Kilambi, Navin, Butler, David L., Lindenfeld, Thomas N.
Format: Article
Language:English
Subjects:
Aged
Aged, 80 and over
Biological and medical sciences
Biomechanical Phenomena
Diseases of the osteoarticular system
Female
Humans
Joint Capsule - anatomy & histology
Joint Capsule - physiology
Male
Medical sciences
Shoulder Joint - anatomy & histology
Shoulder Joint - physiology
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Summary:The purpose of this study was to quantify regional variations in material properties of the glenohumeral joint posterior capsule and to compare these data with the anterior band of the inferior glenohumeral ligament (AB-IGHL). Mechanical properties were determined for individual bands of the AB-IGHL, superior posterior capsule (SUP-PC), middle posterior capsule (MID-PC), and inferior posterior capsule (INF-PC). Significant differences in tissue thickness were found among the 3 posterior capsular regions and the AB-IGHL. The AB-IGHL was thicker than the MID-PC (P = .03) and INF-PC (P = .01), and the SUP-PC was thicker than the INF-PC (P = .02). Except for significant differences in failure strains, material properties were not significantly different among the 4 tissue regions. There were no significant differences between tissue bands in modulus (P = .2), maximum stress (P = .46), or strain energy density (P = .62). Specimens failed primarily near the glenoid insertion (75%), with 4 specimens failing at the humeral insertion and 2 others failing in the tissue’s mid substance.
ISSN:1058-2746
1532-6500
DOI:10.1016/j.jse.2004.06.016