11 Questions
Which ligament provides at least a modest stabilizing tension to most movements of the shoulder?
Middle glenohumeral ligament
Which ligament resists external rotation and inferior and anterior translations of the humeral head?
Superior glenohumeral ligament
Where does the extensive inferior glenohumeral ligament attach proximally?
Along the anterior-inferior rim of the glenoid fossa
How many components does the hammock-like inferior capsular ligament have?
Three
Which part of the anterior and inferior capsule furnishes the primary ligamentous restraint to anterior translation of the humeral head?
Anterior band
What specifically stresses the anterior band of the inferior capsule?
Forceful and dynamic activities involving abduction and external rotation
What does the taut axillary pouch support?
The suspended humeral head
What effect does the axillary pouch provide?
A cradling effect that resists inferior and anterior-posterior translations
What is associated with recurrent anterior dislocations of the GH joint?
Injury and increased laxity of the anterior and inferior capsule
Which ligament has complex bands of interlacing collagen fibers?
Superior glenohumeral ligament
How many bands are the ligaments divided into?
Three
Study Notes
- The GH joint's capsular ligaments consist of complex bands of interlacing collagen fibers.
- The ligaments are divided into superior, middle, and inferior bands.
- The superior glenohumeral ligament resists external rotation and inferior and anterior translations of the humeral head.
- The middle glenohumeral ligament provides at least a modest stabilizing tension to most movements of the shoulder.
- The extensive inferior glenohumeral ligament attaches proximally along the anterior-inferior rim of the glenoid fossa.
- The hammock-like inferior capsular ligament has three separate components: an anterior band, a posterior band, and an axillary pouch.
- The taut axillary pouch supports the suspended humeral head and provides a cradling effect that resists inferior and anterior-posterior translations.
- The anterior band furnishes the primary ligamentous restraint to anterior translation of the humeral head.
- Forceful and dynamic activities involving abduction and external rotation specifically stress the anterior band of the inferior capsule.
- Injury and increased laxity of this portion of the anterior and inferior capsule are associated with recurrent anterior dislocations of the GH joint.
Test your knowledge of the complex bands of the glenohumeral joint's capsular ligaments with this quiz. Learn about the superior, middle, and inferior bands and their roles in stabilizing the shoulder during different movements. Discover the specific functions of the anterior band, posterior band, and axillary pouch of the inferior capsular ligament, and how they work together to support the humeral head and resist translations. Assess your understanding of the potential consequences of injury and increased laxity of these
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