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thoracolumbar fascia

 

Definition: broad central ensheathing aponeurosis of the back; gives origin to internal oblique, transversus abdominis, and part of the latissimus dorsi muscles; exhibits three layers: posterior, middle, and anterior—the posterior and middle layers surround the erector spinae muscles and the middle and anterior layers surround the quadratus lumborum muscle.

Synonym(s): fascia thoracolumbalisTA, lumbodorsal fascia, thoracolumbar aponeurosis

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© Copyright 2017 Wolters Kluwer. All Rights Reserved. Review Date: Sep 19, 2016.
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