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Thoracolumbar fascia: want to learn more about it?

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Thoracolumbar fascia

The thoracolumbar fascia is a large, roughly diamond-shaped area of connective tissue constituted by the thoracic and lumbar parts of the deep fascia enclosing the intrinsic back muscles.

It extends from the nuchal ligament and vertebrae until the sacrum. The thoracolumbar fascia serves as an attachment site for various muscles of the back, even housing the deep ones.

This article will describe the anatomy of the thoracolumbar fascia.

Key facts about the thoracolumbar fascia
Attachments Nuchal ligament, spinous processes, supraspinous ligament, median crest of sacrum
Function Attachment for trapezius, latissimus dorsi, gluteus maximus and hamstring muscles.
Houses several deep muscles of the back, for instance quadratus lumborum, transversospinalis, spinal erectors and multifidus.

Anatomy

The deep fascia of the back attaches medially to the nuchal ligament, the tips of the spinous processes of the vertebrae, the supraspinous ligament, and changes its name at the thoracic and lumbar regions to the thoracolumbar fascia before inserting into the median crest of the sacrum as depicted in the figure below.

The thoracolumbar fascia, like most other deep fasciae surrounds the deep muscles of the back and lumbar regions, and divides the muscles into compartments. It extends laterally from the spinous processes and forms a thin covering for the deep muscles in the thoracic region and a strong thick covering for muscles in the lumbar region where it is widest.

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Function

Find out more about the anatomy of these muscles below:

Thoracolumbar fascia: want to learn more about it?

Our engaging videos, interactive quizzes, in-depth articles and HD atlas are here to get you top results faster.

What do you prefer to learn with?

“I would honestly say that Kenhub cut my study time in half.” – Read more. Kim Bengochea Kim Bengochea, Regis University, Denver

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