Title of article :
The collagen fibers of the anteroinferior capsulolabrum have multiaxial orientation to resist shoulder dislocation
Author/Authors :
Debski، نويسنده , , Richard E and Moore، نويسنده , , Susan M and Mercer، نويسنده , , Jennifer L and Sacks، نويسنده , , Michael S and McMahon، نويسنده , , Patrick J، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2003
Pages :
6
From page :
247
To page :
252
Abstract :
Instability of the glenohumeral joint can be associated with anteroinferior capsulolabral rupture. To understand its static stabilizing effect better, the collagen fiber orientation of the inferior glenohumeral ligament (IGHL), a component of the anteroinferior capsulolabrum, was studied with a small angle light scattering technique. Three rectangular samples (approximately 11 × 6 mm) were excised from the axillary pouch, one from the anterior band (AB) of the IGHL and one control sample from the long head of the biceps tendon of 7 cadaveric shoulders. The small angle light scattering technique scans the tissue with a helium-neon laser beam and quantifies the fiber alignment based on the resultant scattering pattern. The fiber orientation was quantified by an orientation index, defined as the angle within which 50% of the fibers lie. The axillary pouch had a random orientation, whereas the AB-IGHL was random with some regions of localized alignment. The percentage of tissue with an orientation index range of 25° to 45° was 23.2% ± 8.5% and 29.0% ± 13.1% for the axillary pouch and the AB-IGHL, respectively, whereas that for the long head of the biceps tendon was 61.6% ± 15.2%. This suggests that the collagen fibers in the IGHL are not highly aligned and the anteroinferior capsulolabrum can be modeled as a continuous sheet. Moreover, a biomechanical evaluation of the anteroinferior capsulolabrum that investigates the possibility that the mechanical properties may be directionally independent should be conducted.
Journal title :
Journal of Shoulder and Elbow Surgery
Serial Year :
2003
Journal title :
Journal of Shoulder and Elbow Surgery
Record number :
1865994
Link To Document :
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