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Muscle Name: Quadratus Lumborum

Medical Name:

• Quadratus Lumborum

Other Names:

• QL

Head:

• None (Single muscle)

Movement:

• Lateral flexion of the vertebral column
  • Bending the torso to the side
• Extension of the lumbar spine (bilateral contraction)
  • Straightening the torso
• Stabilization of the lumbar spine and pelvis

Attachment:

• Origin:
  • Iliac crest
  • Iliolumbar ligament
• Insertion:
  • Inferior border of the 12th rib
  • Transverse processes of L1-L4 vertebrae

Related Muscles:

• Erector Spinae
• Psoas Major
• Internal Oblique
• Transversus Abdominis

EXERCISES

COMMUNITY