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Muscles of the Gluteal Region
Origins, insertions, innervation, action, and blood supply of muscles of the gluteal region
39
Anatomy
Graduate
09/16/2011

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Term
Gluteus maximus: origin
Definition
posterior gluteal line of ilium, dorsal sacrum, sacrotuberous ligament
Term
Gluteus maximus: insertion
Definition
iliotibial tract of fascia lata, gluteal tuberosity of femur
Term
Gluteus maximus: innervation
Definition
inferior gluteal n. (L5 to S2)
Term
Gluteus maximus: action
Definition
extends thigh, assists in adducting and lateral rotation
Term
Gluteus maximus: blood supply
Definition
superior and inferior gluteal aa., first perforating branch of deep femoral a.
Term
Gluteus medius: origin
Definition
later surface of ilium between anterior and posterior gluteal lines
Term
Gluteus medius: insertion
Definition
lateral surface of greater trochanter of femur
Term
Gluteus medius: innervation
Definition
superior gluteal n. (L4 to S1)
Term
Gluteus medius: action
Definition
abducts thigh, rotates thigh medially
Term
Gluteus medius: blood supply
Definition
deep branch of superior gluteal a.
Term
Gluteus minimus: origin
Definition
lateral surface of ilium between anterior and inferior gluteal lines
Term
Gluteus minimus: insertion
Definition
anterior border of greater trochanter of femur
Term
Gluteus minimus: innervation
Definition
superior gluteal n. (L4 to S1)
Term
Gluteus minimus: action
Definition
abducts thigh, rotates thigh medially
Term
Gluteus minimus: blood supply
Definition
deep branch of superior gluteal a.
Term
Piriformis: origin
Definition
anterior surface of sacrum and sacrotuberous ligament
Term
Piriformis: insertion
Definition
superior border of greater trochanter of femur
Term
Piriformis: innervation
Definition
anterior rami of S1 and S2
Term
Piriformis: action
Definition
laterally rotates thigh, abducts thigh then limb is flexed
Term
Piriformis: blood supply
Definition
superior and inferior gluteal aa., internal pudendal a.
Term
Obturator internus: origin
Definition
pelvic surface of obturator membrane and margins of obturator foramen
Term
Obturator internus: insertion
Definition
medial surface of greater trochanter of femur
Term
Obturator internus: innervation
Definition
nerve to obturator internus (L5 to S2)
Term
Obturator internus: action
Definition
laterally rotates thigh, abducts thigh when limb is flexed
Term
Obturator internus: blood supply
Definition
internal pudendal and superior gluteal aa.
Term
Gemellus superior: origin
Definition
outer surface of ischial spine
Term
Gemellus superior: insertion
Definition
medial surface of greater trochanter of femur
Term
Gemellus superior: innervation
Definition
nerve to obturator internus (L5 to S2)
Term
Gemellus superior: action
Definition
laterally rotates thigh
Term
Gemellus superior: blood supply
Definition
inferior gluteal a.
Term
Gemellus inferior: origin
Definition
upper margin of ischial tuberosity
Term
Gemellus inferior: insertion
Definition
medial surface of greater trochanter of femur
Term
Gemellus inferior: innervation
Definition
nerve to quadratus femonris (L4 to S1)
Term
Gemellus inferior: action
Definition
laterally rotates thigh
Term
Gemellus inferior: blood supply
Definition
inferior gluteal a.
Term
Quadratus femoris: origin
Definition
lateral margin of ischial tuberosity
Term
Quadratus femoris: insertion
Definition
quadrate tubercle on intertrochanteric crest of femur
Term
Quadratus femoris: innervation
Definition
nerve to quadratus femoris (L4 to S1)
Term
Quadratus femoris: action
Definition
laterally rotates thigh, adducts thigh
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