All are true about Thoracolumbar fascia except –
Correct Answer: The fascia lies posterior to posterior abdominal wall muscles.
Description: Thoracolumbar fascia
- Lumbar part extends between the 12th rib and iliac crest.
- It has 3 layers
Anterior layer
Attachment - Anterior surface of the transverse process of lumbar vertebrae
Position - anterior to quadratus lumborum
Middle layer
Attachment - the Transverse process of lumbar vertebrae
Position - Posterior to quadratus lumborum but anterior to erector spinae.
Posterior layer
Attachment - the Spinous process of lumbar vertebrae
Position - Posterior surface of erector spinae.
- At the lateral margin of erector spinae, posterior and middle layers unite. Further, anterior layer joins at the later margin of quadratus lumborum. Together they form the aponeurotic origin of transversus abdominis. It also acts as the origin for internal oblique muscle.
Category:
Anatomy
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