Piriformis Muscle Flashcards

Flashcards are a great way to memorise information about the piriformis muscle. Test your knowledge of anatomy using the piriformis flashcards below.

Press a flash card to reveal the answer.

Origin

Anterior surface of sacrum, gluteal surface of ilium, & sacrotuberous ligament

Insertion

Greater trochanter of the femur

Actions

  • Laterally rotates the thigh at hip joint
  • Abducts thigh at hip joint (when hip is flexed past 60⁰)
  • Stabilises head of femur in acetabulum

Innervation

  • Superior gluteal nerve
  • Ventral rami of S1 and S2

Blood Supply

  • Superior and inferior gluteal arteries
  • Internal pudendal artery

Would you like to learn more about the piriformis muscle? Then check out the piriformis muscle article and video by clicking the link below:
Piriformis Muscle Anatomy

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