Dissection of thoracic and lumbosacral regions of back from a posterior approach
Quadratus lumborum muscle, posterior view
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Image #214-6
Dissection of thoracic and lumbosacral regions of back from a posterior approach
Quadratus lumborum muscle, posterior view
The middle layer of thoracolumbar fascia has been removed from the posterior surface of the quadratus lumborum muscle (7). Small slips of origin join the quadratus lumborum from the transverse processes of the second and third lumbar vertebrae.
- Lumbocostal ligament
- Rib XII
- Subcostal nerve
- Left pointer: Dorsal branch lumbar artery II Right pointer: Dorsal branch lumbar nerve II
- Transverse process of vertebra L. III
- Thoracolumbar fascia (anterior layer)
- Quadratus lumborum muscle
- Iliolumbar ligament
- Posterior superior iliac spine
- Spinous process vertebra Th. XII
- Supraspinous ligament
- Intertransverse muscles
- Dorsal branch lumbar nerve II
- Erector spinae muscle (covered by thoracolumbar fascia)
- Intervertebral joint capsule L. III-IV
- Lamina (arch of vertebra) L. V