Front | Back |
What four muscles aid in stabilizing the shoulder?
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Supra/Infraspinatus
Subscapularis
Teres Minor
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Supraspinatus, Infraspinatus and Teres Minor
Insertion
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Greater tubercle of Humerus
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Supraspinatus
Action
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Holds head of humerus on glenoid cavity
Abducts humerus 30*
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Infraspinatus
Action
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Holds head of humerus in glenoid cavity
Adduction and lateral rotation
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Teres Minor
Action
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Holds head of humerous in glenoid cavity
Lateral rotation of humerus
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Subscapularis
Insertion
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Lesser tubercle of humerus
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Subscapularis
Action
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Holds head of humerus in glenoid cavity
medially rotates humerus
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