Other Names

• Six Deep Lateral Rotator Hip Muscles

Heads

1. Piriformis
2. Gemellus Superior
3. Obturator Internus
4. Gemellus Inferior
5. Obturator Externus
6. Quadratus Femoris

Movement

Hip

• External Rotation [1, 2, 3, 4, 5, 6 ]
• Transverse Abduction [1, 5 ]
• Internal Rotation [1] (see comments)

Attachments

Origin

• Sacrum
  • Anterior [1 ]
  • Sacrotuberous Ligament [1 ]
• Ischium
  • Posterior Portions
    • Ischial Spine [2 ]
    • Ischial Tuberosity
      • Posterior Portion [4 ]
      • External Border [6 ]
  • Obturator Foramen [5, 6 ]
• Ischium and Pubis
  • Inside Surfaces and Obturator Membrane [3 ]

Insertion

• Femur
  • Greater Trochanter
    • Medial Surface [2, 3, 4 ]
    • Superior/Medial Surface [1 ]
    • Posterior Surface
      • Quadrate Tubercle [6 ]
      • Trochanteric Fassa [5 ]