Medical Definition of Subscapularis muscle
Subscapularis muscle: A muscle that moves the arm by turning it inward (internal rotation).
The tendon of the subscapularis muscle is one of four tendons that stabilize the shoulder joint and constitute the rotator cuff. Each of these four tendons hooks up to a muscle that moves the shoulder in a specific direction.
The four muscles whose tendons form the rotator cuff are:
Damage to the rotator cuff is one of the most common causes of shoulder pain.
The term "subscapularis" means under (sub) the scapula (the wingbone). The subscapularis muscle originates there, beneath the scapula.Source: MedTerms™ Medical Dictionary
Last Editorial Review: 6/9/2016
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