Shoulder Muscle - Subscapularis

Muscle Origin

Subscapular fossa of the scapula

Muscle Insertion

Lesser tubercle of the humerus

Muscle Isolated Function

Concentric Action: Shoulder internal rotation

Muscle Integrated Function

Eccentric Action: Shoulder external rotation Isometric Action: Stabilizes the shoulder girdle

Muscle Innervation

Upper and lower subscapular nerve (C5–C6)

Products