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Muscle: Teres minor (Musculus teres minor)
a. Rotating 3D Image of skeleton and muscle (in new tab or window).

Attachments: Origin & Insertion
Origin: (proximal attachment)
a. Middle part of the lateral (axillary) border of the scapula.

Insertion: (distal attachment)
a. Inferior aspect of greater tubercle of humerus.

a. Laterally rotates the arm at the shoulder (glenohumeral) joint.
b. Weakly adducts the arm at the shoulder (glenohumeral) joint.
c. Helps stablize the shoulder by drawing the humerus toward the glenoid fossa of the scapula.

Nerves & Nerve Roots:
a. Axillary nerve.
a. C5 and C6.

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Subscapularis Muscle