MOINA Muscles of the Gluteal Region

Question 1

gluteus maximus

Answer 1

origin: outer surface of the ilium, sacrum, coccyx, and sacrotuberous ligament
insertion: iliotibial tract and gluteal tuberosity of the femur

nerve: inferior gluteal nerve

extends and laterally rotates the hip joint; extends knee through the iliotibial tract

Question 2

gluteus medius

Answer 2

origin: outer surface of the ilium
insertion: lateral surface of the greater trochanter of the femur

nerve: superior gluteal nerve

abducts thigh at hip joint; tilts pelvis when walking to permit opposite leg to clear ground

Question 3

gluteus minimus

Answer 3

origin: outer surface of ilium
insertion: anterior surface of greater trochanter of femur

nerve: superior gluteal nerve

abducts thigh at hip joint; tilts pelvis when walking to permit opposite leg to clear ground

Question 4

tensor fasciae latae

Answer 4

origin: iliac crest
insertion: iliotibial tract

nerve: superior gluteal nerve

assist gluteus maximus in extending knee joint

Question 5

piriformis

Answer 5

origin: anterior surface of sacrum
insertion: upper border of greater trochanter of femur

nerve: first and second sacral nerves

lateral rotator of thigh at hip joint

Question 6

obturator internus

Answer 6

origin: inner surface of the obturator membrane
insertion: upper border of greater trochanter of femur

nerve: sacral plexus

lateral rotator of thigh at hip joint

Question 7

gemellus superior

Answer 7

origin: spine of ischium
insertion: upper border of greater trochanter of femur

sacral plexus

lateral rotator of thigh at hip joint

Question 8

gemellus inferior

Answer 8

origin: ischial tuberosity
insertion: upper border of greater trochanter of femur

sacral plexus

lateral rotator of thigh at hip joint

Question 9

quadratus femoris

Answer 9

origin: lateral border of ischial tuberosity
insertion: quadrate tubercle of femur

nerve: sacral plexus

lateral rotator of thigh at hip joint