Teres MinorThe structure indicated is the teres minor muscle. The teres minor muscle is one of the four muscles of the rotator cuff. The rotator cuff muscles are located in the posterior scapula region and serve to stabilise the glenohumeral joint. There are 4 rotator cuff muscles which can be remembered using the mnemonic SITS:
- Teres minor
Origin: Superolateral portion of scapula border
Insertion: Greater tubercle of humerus (inferior facet)
Action: Lateral rotation of arm. Assists in stabilisation of glenohumeral joint.
Innervation: Axillary nerveLearn more about the anatomy of the rotator cuff in this tutorial.