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Encyclopedia > Teres major
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Teres major is a muscle of the upper limb and one of six scapulohumeral muscles. It's proximal attachment is the posterior aspect of the inferior angle of the scapula. It's distal attachment is the medial lip of the intertubercular sulcus of the humerus. It is innervated by the lower subscapular nerve (segmental levels C6 and C7). Teres major contributes to two movements of the upper limb, internal and external rotation of the shoulder.


See also

A top-down view of skeletal muscle Muscle is a contractile form of tissue. ... This is a list of muscles of the human anatomy. ...

  Results from FactBites:
 
IV. Myology. 7c. The Muscles and Fasciæ of the Shoulder. Gray, Henry. 1918. Anatomy of the Human Body. (1230 words)
In front it is continuous with the fascia covering the Pectoralis major; behind, where it is thick and strong, with that covering the Infraspinatus; above, it is attached to the clavicle, the acromion, and the spine of the scapula; below, it is continuous with the deep fascia of the arm.
Its anterior fibers, assisted by the Pectoralis major, draw the arm forward; and its posterior fibers, aided by the Teres major and Latissimus dorsi, draw it backward.
The Teres major assists the Latissimus dorsi in drawing the previously raised humerus downward and backward, and in rotating it inward; when the arm is fixed it may assist the Pectorales and the Latissimus dorsi in drawing the trunk forward.
BioMed Central | Full text | Does preoperative abduction value affect functional outcome of combined muscle transfer ... (3714 words)
Patients were placed in the lateral decubitus position and conjoined tendon of latissimus dorsi and teres major was explored with a posterior zigzag incision parallel to the lateral border of scapula to prevent scar contracture (Figure 2).
The importance of transferring the teres major and latissimus dorsi as one conjoined tendon and anchoring into the posterior aspect of the greater tuberosity at the insertion of the infraspinatus similar to Hoffer method is augmentation of the weakened infraspinatus.
Extensive dissection of latissimus dorsi and teres major muscles from the surrounding structures gave us the opportunity to utilize both muscles for transfer, without any difficulty during the passage of the conjoined tendon through the tunnel which was prepared between long head of triceps and deltoid muscle, and also during reinsertion to the humerus.
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