Atlas of Human Anatomy by Netter

Piriformis

Obturator internus

Obturator externus

Gemelli (superior and inferior)

Quadratus femoris

Extensors of knee

Gluteus maximus

Tensor fasciae latae

Muscle Origin Insertion Innervation Blood Supply Action

Gluteus

maximus

Ilium posterior to posterior

gluteal line dorsal surface of

sacrum and coccyx,

sacrotuberous ligament

Most fibers end in Iliotibial tract that

inserts into lateral condyle of tibia;

some fibers insert gluteal

tuberosity of femur

Inferior

gluteal

nerve (L5 -

S2)

Superior and inferior

gluteal arteries, first

perforating branch of

deep femoral artery

Extends

thigh,

assists

lateral

rotation

Gluteus

medius

Lateral surface of ilium

between anterior and posterior

gluteal lines

Lateral surface of greater

trochanter of femur

Superior

gluteal

nerve (L4 -

S1)

Deep branch of superior

gluteal artery

Abducts

thigh,

rotates thigh

medially

Gluteus

minimus

Lateral surface of ilium

between anterior and inferior

gluteal lines

Anterior border of greater trochanter

of femur

Superior

gluteal

nerve (L4 -

S1)

Deep branch of superior

gluteal artery

Abducts

thigh,

rotates thigh

medially

Piriformis Anterior surface of sacrum and

sacrotuberous ligament

Superior border of greater

trochanter of femur

Ventral

rami of S1

and S2

Superior and inferior

gluteal arteries, internal

pudendal artery

Laterally

rotates

thigh,

abducts

flexed thigh

Obturator

internus

Pelvic surface of obturator

membrane and margins of

obturator foramen

Medial surface of greater trochanter

of femur

Nerve to

obturator

internus

(L5-S2)

Internal pudendal and

superior gluteal arteries

Laterally

rotates

thigh,

abducts

flexed thigh

Gemellus

superior

Outer surface of ischial spine Medial surface of greater trochanter

of femur

Nerve to

obturator

internus

(L5-S2)

Inferior gluteal artery Laterally

rotates thigh

Gemellus

inferior

Upper margin of ischial

tuberosity

Medial surface of greater trochanter

of femur

Nerve to

quadratus

femoris

(L4-S1)

Inferior gluteal artery Laterally

rotates thigh

Quadratus

femoris

Lateral margin of ischial

tuberosity

Quadrate tubercle on

intertrochanteric crest of femur

Nerve to

quadratus

femoris

(L4-S1)

Medial circumflex

femoral artery

Laterally

rotates thigh

Muscles of the Thigh