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What is the angle of which muscle prevents the humeral head from sliding upward out of the joint as the arm is raised?
Wiki User
∙ 9y ago
Shoulder joint is highly mobile joint. The head of the humerus is to large as compared to the cavity on scapula. Still the dislocation of the joint is very uncommon. You have four muscles attached around the head of the humerus. Subscapularis, supraspinatus, infraspinatus and teres minor. These muscles keep the head of the humerus tightly opposed to scapula regardless of the position of the arm. This prevents the dislocation of the shoulder joint.
Wiki User
∙ 9y ago
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