Other Names
- Deep Low Back Lateral Flexor
Heads
- Quadratus Lumborum
Movement
- Lateral Flexion
- Right Lateral flexion [Right Quadratus Lumborum]
- Left Lateral flexion [Left Quadratus Lumborum]
- Rotation (from rotation to neutral position)
- Stabilizes pelvis and lumbar spine
Attachments
- Ilium
- Illiac Crest
- Posterior Inner Lip
- Illiac Crest
- Upper 4 Lumbar Vertebrae
- Transverse Processes
- 12th Rib
- Lower border
Related Muscles
Comments
Activated with other muscles when pelvis elevates when standing on one leg and position of body relative to gravity is altered (as when standing on wobble board). Initially assists in rotation to neutral position only when waist is initially significantly rotated.