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Teres Major

Region

Origin & Insertion

['Origin: Inferior angle of scapula', 'Insertion: Medial lip of intertubercular sulcus of humerus']

Synergistic Muscles

['Latissimus dorsi', 'Subscapularis']

Joints

['Glenohumeral joint']

Primary Actions

['Shoulder extension', 'Adduction', 'Internal rotation']

Nerve & Spinal Segment

Lower subscapular nerve

Brachial plexus; C5–C6

Interesting

Often confused with teres minor. [Moore's]

Reversal of Action

Common Dysfunctions

Poor shoulder control during internal rotation or adduction

How to Stretch

Overhead reach with external rotation.

Trigger Points

How to Strengthen

Pull and press movements in IR.

Concentric Action

Applications:

Eccentric Action

Isotonic Action

Related Conditions

['Scapular dyskinesis', 'Postural strain']

Isometric Action

Exercise Ideas

['Band rows', 'Cable pullover', 'Lat pull with inward rotation']

Spry Juncture, LLC

How to Evolve Gracefully