EN | DE | PT Contact How to study Login Register

Register now and grab your free ultimate anatomy study guide!

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.


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.

Thoracolumbar Fascia - dorsal view

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.


Recommended video: Intrinsic muscles of the back: medial tract
Origins, insertions, innervation and functions of the medial tract of the intrinsic muscles of the back.

Clinical Correlation

Chronic Low Back Pain: The thoracolumbar fascia has been implicated in pains of the lower back region buttocks (piriformis syndrome) and sacroiliac joint pains.

Injury to the thoracolumbar fascia usually manifests as tightness, spasticity and increased tone in the lower thoracic spine and lumbar spine / paraspinal regions causing severe pains.

Get me the rest of this article for free
Create your account and you'll be able to see the rest of this article, plus videos and a quiz to help you memorize the information, all for free. You'll also get access to articles, videos, and quizzes about dozens of other anatomy systems.
Create your free account ➞
Show references


Author, Review and Layout:

  • Onome Okpe
  • Latitia Kench
  • Catarina Chaves


  • Thoracolumbar Fascia - Yousun Koh
© Unless stated otherwise, all content, including illustrations are exclusive property of Kenhub GmbH, and are protected by German and international copyright laws. All rights reserved.

Related Atlas Images

Superficial muscles of the back

Intrinsic muscles of the back

5th lumbar vertebra level

Continue your learning

Article (You are here)
Other articles
Well done!

Register now and grab your free ultimate anatomy study guide!

Create your free account.
Start learning anatomy in less than 60 seconds.