Thoracolumbar fascia

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Muscles of the human back:
The thoracolumbar fascia is a diamond-shaped cutout in the gray area between the two iliac crests and origin of the latissimus dorsi to see

The thoracolumbar fascia is a fascia in the lumbar region that envelops the erector spinae muscle .

The fascia consists of two leaves: the deep leaf ( lamina profunda or anterior ) is attached to the iliac crest ( crista iliaca ), to the costal processes ( transverse processes ; processus costales or transversi ) of the lumbar vertebrae and to the lowest rib , while the superficial leaf ( Lamina superficialis or posterior ) is fixed to the spinous processes ( processus spinosi ) of the vertebrae. The union of the two connective tissue sheets on the lateral (to the side) edge of the erector spinae muscle creates a box for the paravertebral muscles, that is, located next to the vertebrae. The aponeurosis is also the starting point for various muscles; the transversus abdominis and the obliquus internus abdominis muscles arise from the deep leaf , while the latissimus dorsi , serratus posterior inferior and gluteus maximus muscles have a surface of origin on the superficial leaf .

The superficial leaf of the thoracolumbar fascia is continued cranially (headward) by the fascia nuchae .


  • Theodor H. Schiebler (Ed.): Anatomy: Histology, history of development, macroscopic and microscopic anatomy, topography . Springer 2004, ISBN 3-540-21966-8 .