OINA: (Gluteal) Region)

Question 1

Gluteus Maximus

Answer 1

O: Outer surface of ilium, sacrum, coccyx, sacrotuberous ligament

I: Iliotibial tract and gluteal tuberosity of femur

N: Inferior gluteal nerve L5,S1,S2

A: Extends and laterally rotates hip joint, through iliotibial tract, it extends knee joint

Question 2

Gluteus Medius

Answer 2

O: Outer surface of ilium

I: lateral surface of greater trochanter

N: Superior gluteal nerve L5,S1

A: Abducts thigh at hip jt; tilt pelvis when walking to permit opposite leg to clear ground

Question 3

Gluteus minimus

Answer 3

O: Outer surface of ilium

I: Anterior surface of greater trochanter of femur

N: Superior Gluteal L5,S1

A: Abducts thigh at hip joint; tilt pelvis when walking to permit opposite leg to clear ground

Question 4

Tensor fasciae latea

Answer 4

O: Iliac crest

I: Iliotibial tract

N: Superior gluteal nerve L4,L5

A: Assist gluteus maximus in extending the knee jt

Question 5

Piriformis

Answer 5

O: Anterior surface of sacrum

I: Upper border of greater trochanter

N: 1st and 2nd sacral nerves

A: Lateral rotator of hip joint

Question 6

Obturator internus

Answer 6

O: Inner surface of obturator membrane

I: Upper border of Greater Trochanter

N: Sacral plexus L5,S1

A: Lateral rotator of thigh at hip joint

Question 7

Gemellus superior

Answer 7

O: Spine of ischium

I: Upper border of greater trochanter of femur

N: Sacral plexus L5,S1

A: Lateral rotator of thigh at hip joint

Question 8

Gemellus inferior

Answer 8

O: Ischial tuberosity

I: Upper border of greater trochanter of femur

N: Sacral Plexus L5,S1

A: Lateral rotator of thigh at hip joint

Question 9

Quadratus femoris

Answer 9

O: Lateral border of ischial tuberosity

I: Quadrate tubercle of femur

N: Sacral Plexus L5,S1

A: Lateral rotator of thigh at hip joint