Obliques

Other Names

• Hips (Upper)
• Waist (Sides)
• Obliques

Heads

1. External Oblique
2. Internal Oblique

Movement

Spine(Lumbar)

• Flexion [1, 2]
  • Both Sides
• Rotation
  • Rotation right [Left 1, Right 2]
  • Rotation left [Right 1, Left 2]
• Lateral Flexion
  • Lateral flexion right [Right 1, Right 2]
  • Lateral flexion left [Left 1, Left 2]
• Intra-abdominal Pressure [1, 2]

Attachments

Origin

• Ribs 5-12 (Lower 7 Ribs) [1]
  • External Surfaces
• Thoracolumbar Fascia (Lumbar Fascia) [2]
• Ilium [2]
  • Illiac Crest
    • Anterior two thirds
• Inguinal Ligament [2]
  • Lateral two thirds

Insertion

• Rectus Abdominis Fascia (Lower Front) [1]
• Ilium [1]
  • Anterior Crest
• Inguinal Ligament [1]
• Pubis
  • Crest [1]
  • Conjoint Tendon [2]
• Ribs 8-12 (Lower 2-4 Ribs) [2]
  • Inferior borders
• Linea Alba [2]

Related Muscles

• Quadratus Lumborum
• Rectus Abdominis
• Transversus Abdominis

Comments

The Obliques and the Transversus Abdominis increase the intra-abdominal pressure necessary for the support of the vertebral column in some exercises.