Lower Extremity Muscles ( Name, Origin, Action)

What is the name, origin, and insertion of this muscle?

Name; psoas major

Origin; transverse process of lumbar vertebrae (bodies, intervertebral disks)

Insertion; Lesser trochanter of femur

What is the name, origin, and insertion of this muscle?

Name; iliacus

Origin; upper 2/3 of iliac fossa

Insertion; lesser trochanter with tendon of psoas major

What is the name, origin, and insertion of this muscle?

Name; gluteus maximus

Origin; outer surface os ilium, adjacent post. surface of surface of sacrum and coccyx

Insertion; iliotibal tract; gluteal tuberosity

What is the name, origin, and insertion of this muscle?

Name; gluteus medius

Origin; outer surface of ilium inferior to iliac crest

Insertion; lateral surface of greater trochanter

What is the name, origin, and insertion of this muscle?

Name; gluteus minimus

Origin; outer surface of ilium between anterior and inferior gluteal line

Insertion; anterior surface of greater trochanter

What is the name, origin, and insertion of this muscle?

Name; tensor fascia latae

Origin; outer lip of iliac crest between ASIS and iliac tubercle

Insertion; upper part of iliotibal tract

What is the name, origin, and insertion of this muscle?

Name; piriformis

Origin; internal surface of sacrum

Insertion; upper border of greater trochanter

What is the name, origin, and insertion of this muscle?

Name; obturator internus

Origin; pelvic surface of obturator membrane and surrounding bones

Insertion; common tendon with superior and inferior gemelli to medial surface of greater trochanter

What is the name, origin, and insertion of this muscle?

Name; gemellus superior

Origin; spine of ischium

Insertion; with the tendon of obturator internus into upper border of the greater trochanter

What is the name, origin, and insertion of this muscle?

Name; gemellus inferior

Origin; upper margin of ischial tuberosity

Insertion; with the tendon of obturator internus into upper border of the greater trochanter

What is the name, origin, and insertion of this muscle?

Name; Quadratus femoris

Origin; lateral border of ischial tuberosity

Insertion; below intertrochanteric crest

What is the name, origin, and insertion of this muscle?

Name; obturator externus

Origin; outer surface of inferior and superior rami of pubis, ramus of ischium

Insertion; trochanteric fossa of femur