Skip to content

External oblique

Contents

Anatomy

External oblique - anterior
External oblique - anterolateral
External oblique - lateral

Position

  • Superficial

Origin

  • Crista iliaca anterior
  • Pubis
  • Abdominal aponeurosis

Insertion

  • Inferior border of 5-12th ribs

Main function

Trunk

  • Flexion
  • Lateral flexion
  • Contralateral rotation

Pelvis

  • Posterior tilt

Secondary function

Pelvis

  • Elevation
  • Ipsilateral rotation

Abdominal content

  • Compression

Segmental nerve innervation

Arterial supply

Referred pain pattern

Obliquus externus - pain pattern

Muscle type

  • Phasic
    • Weakens when overactivated

Symptoms

  • Postural distortion of pelvis
  • Dysfunctional gait
  • Loss of abdominal tone
  • Gas, bloating, belching, heartburn
  • Vomiting, diarrhea

Muscular attachments

 

Videoes

Short version

Detailed version

Myofascial lines

Lateral line

Spiral line