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serratus anterior
(redirected from Serratus anterior muscle)

   Also found in: Dictionary/thesaurus, Wikipedia 0.01 sec.
serratus anterior
[serā′təs]
Etymology: L, serra, saw teeth
a thin muscle of the chest wall extending from the ribs under the arm to the scapula. Arising from the outer surface and upper border of the first eight or nine ribs, it inserts into the medial angle, the vertebral border, and the inferior angle of the scapula. It acts to rotate the scapula and to raise the shoulder, as in full flexion and abduction of the arm. Compare pectoralis major, pectoralis minor, subclavius.


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1) Primary nerve repair or interposition nerve grafting techniques are not feasible in this small group of patients) We describe the long-term results of microvascular flee-tissue transfer of the serratus anterior muscle to achieve facial reanimation in 3 patients who had undergone wide-field parotidectomy with facial nerve resection.
Trapezius weakness is evidenced by lateral winging, which is differentiated from the medial winging seen in weakness of the serratus anterior muscle.
 
 
 
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