Subscapularis

Description

Anatomy of the subscapularis muscle. The subscapularis muscle (SSC) with its tendinous attachment (TA) and muscular attachment (MA) at the humerus. The transverse ligament (TL) covers the bicipital groove. The supraspinatus muscle (SSM) and tendon insert onto the greater tuberosity (GT). The acromion (A) and coracoid process (CP) are depicted

Name

• Subscapularis
• Forgotten Tendon

General

• Large triangular muscle located on the anterior face of the scapula
• One of the four rotator cuff muscles
• Primarily responsible for internal rotation of the arm

Origin

• Subscapular fossa of scapula

Insertion

• Lesser tubercle of humerus

Actions

• Internal rotation and extension of arm

Vascular Supply

• Subscapular artery

Innervation

• Subscapular Nerve

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Clinical Significance

• Rotator Cuff Tear
• Rotator Cuff Tendonitis
• Calcific Tendinitis of the Rotator Cuff
• Rotator Cuff Arthropathy

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See Also

• Shoulder Pain Main
• Shoulder Anatomy Main
• Physical Exam Shoulder

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