Teres major

Teres major is a muscle of the upper limb and one of the seven scapulohumeral muscles. It is a thick but somewhat flattened muscle, located in the upper part of the posterior aspect of the axilla.

Anatomy

The teres major muscle originates from the posterior aspect of the scapula, specifically the lateral border and inferior angle. It inserts into the medial lip of the intertubercular sulcus of the humerus.

Function

The teres major muscle has several functions. It is primarily involved in the medial rotation and adduction of the humerus. It also assists in extending the humerus.

Clinical significance

Injury to the teres major muscle can result in a condition known as teres major muscle syndrome. This can cause pain and limited range of motion in the shoulder.

See also

• Scapulohumeral muscles
• Axilla
• Humerus

References

Teres major Resources
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