front 1 Psoas major | back 1 O: transverse processes of lumbar vertebrae I: lesser trochanter of femur A: flexes thigh and flexes trunk N: L2 and L3 branches of lumbar plexus |
front 2 Iliacus | back 2 O: upper 2/3 of iliac fossa I: lesser trochanter with tendon of psoas major A: flexes thigh N: femoral nerve |
front 3 gluteus maximus | back 3 O: outer surface of ilium, adjacent post. surface of sacrum & coccyx I: iliotibial tract; gluteal tuberosity A: abducts, extends and laterally rotates thigh N: inferior gluteal nerve |
front 4 gluteus medius | back 4 O: outer surface of ilium inferior to iliac crest I: lateral surface of greater trochanter A: abducts and medially rotates thigh N: super gluteal nerve |
front 5 gluteus minimus | back 5 O: outer surface of ilium between anterior and inferior gluteal line I: anterior surface of greater trochanter A: abducts and medially rotates thigh N: superior gluteal nerve |
front 6 tensor fascia latae | back 6 O: outer lip of iliac crest between ASIS and iliac tubercle I: upper part of iliotibial tract A: abducts and flexes thigh N: superior gluteal nerve |
front 7 piriformis | back 7 O: internal surface of sacrum I: upper border of greater trochanter A: laterally rotates and abducts thigh N: 1st and 2nd sacral nerve |
front 8 obturator internus | back 8 O: pelvic surface of obturator membrane and surrounding bones I: common tendon with superior and inferior gemelli to medial surface of greater trochanter A: laterally rotates thigh N: nerve to the obturator internus |
front 9 gemellus superior | back 9 O: spine of ischium I: w/ tendon of obturator internus into upper border of greater trochanter A: laterally rotates thigh N: branch of nerve to obturator internus frojm sacral plexus |
front 10 gemellus inferior | back 10 O: upper margin of ischial tuberosity I: w/ tendon of obturator internus into upper border of greater trochanter A: laterally rotates thigh N: branch of nerve to quadratus femoris from sacral plexus |
front 11 quadratus femoris | back 11 O: lateral border of ischial tuberosity I: below intertrochanteric crest A: laterally rotates thigh N: nerve to the quadratus femoris |
front 12 obturator externus | back 12 O: outer surface of inferior & superior rami of pubis, ramus of ischium I: trochanteric fossa of femur A: laterally rotates thigh N: obturator nerve |