- See:
-
stabilizers of the shoulder:
-
shoulder capsule:
- Discussion:
- originates as a portion of fibrous glenoid labrum anteroinferiorly;
- there are two subdivisions of this ligament: an anterior and posterior bands along with the intervening axillary pouch;
- antero-inferior portion of normal capsule, inferior glenohumeral ligament primary restraint to anteior dislocation;
- primary restraint to anterior and anteroinferior instability;
- limits anterior translation in abduction and external rotation;
- posterior band limits posterior translation in abduction and internal rotation;
- avulsion of this complex results in
bankart lesion, which is essential lesion in recurrent anterior dislocating shoulders;
- IGHL must fail for
anterior dislocation to occur;
- primary restraint to anterior and anteroinferior instability;
- at 90 deg abduction, inferior glenohumeral lig developed most strain.
- inferior glenohumeral ligaments limits external rotation at 45 to 90 deg of abduction;
- w/ body upright, coracohumeral & middle glenohumeral ligaments play important roles in resisting inferior translation;
The anatomy and histology of the inferior glenohumeral ligament complex of the shoulder.
SJ Obrien.
Am. J. Sports Med. Vol 18. p 449-456. 1990.
The anterior band of the inferior glenohumeral ligament.
Assessment of its permanent deformation and the anatomy of its glenoid attachement.
PJ McMahon et al.
JBJS. Vol 81-B. No 3. May 1999. p 406.
Effects of repetitive subfailure strains on the mechanical behavior of the inferior glenohumeral ligament.
Reconciling Arthroscopic and Anatomic Morphology of the Humeral Insertion of the Inferior Glenohumeral Ligament.
