Teres Minor

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Original Author(s): Oliver Jones
Last updated: October 9, 2022
Revisions: 3

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The teres minor is an intrinsic muscle of the shoulder region. It is part of the rotator cuff muscle group.

Attachments: Originates from the posterior surface of the scapula, adjacent to its lateral border. It attaches to the greater tubercle of the humerus.
Actions: Lateral rotation of the arm.
Innervation: Axillary nerve.
Blood supply: Circumflex scapular artery and the posterior circumflex humeral artery.

Fig 1 – The rotator cuff muscles, which act to stabilise the shoulder joint.