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Teres Minor

Region

Origin & Insertion

['Origin: Lateral border of scapula', 'Insertion: Inferior facet of greater tubercle of humerus']

Synergistic Muscles

['Infraspinatus', 'Posterior deltoid']

Joints

['Glenohumeral joint']

Primary Actions

['External rotation of shoulder']

Nerve & Spinal Segment

Axillary nerve

Brachial plexus; C5–C6

Interesting

Smallest rotator cuff muscle. [Netter's]

Reversal of Action

Support posture while spine rotates

Common Dysfunctions

Shoulder instability, poor control in overhead activities

How to Stretch

Overhead IR stretch (e.g., sleeper stretch).

Trigger Points

How to Strengthen

ER with resistance near side.

Concentric Action

External rotation of shoulder

Applications:

Rotator cuff balance and shoulder deceleration control

Eccentric Action

Control shoulder internal rotation

Isotonic Action

ER drills lying or standing

Related Conditions

['Shoulder instability', 'Impingement']

Isometric Action

Sustain ER under resistance

Exercise Ideas

['Cable external rotation', 'Side-lying ER', 'Theraband ER']

Related Blogs

Images

Videos

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