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4 Cards in this Set
- Front
- Back
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coracohumeral ligament
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* extends from the coracoid process of the scapula to the head of the humerus
* helps support the weight of the upper limb |
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glenohumeral ligaments
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* strengthen the front of the articular capsule
* very weak, sometimes even absent * shoulder dislocates by going downward and forward |
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long head of the biceps
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* tendon wraps around and acts as a primary stabilizer of the joint
* pulls the humerus head against the glenoid fossa |
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rotator cuff muscles
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* insertions "mesh" together to form a wrap
* stabilize the shoulder joint 1. Subscapularis: fills the subscapular fossa, extends over the ventral surface of the scapula, & attaches to the lesser tubercle of the humerus *** rotates the humerus medially & helps hold the head in the glenoid fossa 2. Supraspinatus: fills the supraspinous fossa and extends to the greater tubercle of the humerus *** prevents downward dislocation of the humerus 3. Infraspinatus: fills the infraspinous fossa and extends to the greater tubercle of the humerus *** laterally rotates the humerus 4. Teres minor: extends from the lateral border of the infraspinous fossa to the greater tubercle of the humerus *** laterally rotates the humerus |
