Gluteal Region

Question 1

Gluteus Maximus M. : Functions

Answer 1

• Chief extensor of the thigh and lateral rotation
• Slight extension of the leg when working with tensor fascia lata

(Largest gluteal muscle)

Question 2

Gluteus Maximus M. : Innervation

Answer 2

Inferior gluteal nerve

Question 3

Gluteus Maximus M. : Blood Supply

Answer 3

• Superficial branch of the superior gluteal A.

- Inferior gluteal A.

Question 4

Gluteus Maximus M. Insertion

Answer 4

• One head on the IT band

- One on the gluteal tuberosity

Question 5

Gluteus Medius and Minimus M. : Functions

Answer 5

• Thigh abduction and medial rotation (particularly gluteus minimus)

Question 6

Gluteus Medius and Minimus M. : Innervation

Answer 6

Superior gluteal nerve

Question 7

Gluteus Medius and Minimus M. : Blood Supply

Answer 7

Deep branch of the superior gluteal A.

Question 8

Tensor Fascia Lata M. : Function

Answer 8

• Abducts, medially rotates, and flexes thigh

- Slight extension of knee along with the gluteus maximus

Question 9

Gluteus Medius and Minimus M. : Innervation

Answer 9

Superior gluteal nerve

Question 10

Gluteus Medius and Minimus M. : Blood Supply

Answer 10

Deep branch of the superior gluteal A.

Question 11

Piriformis M. : Function

Answer 11

• Abduct on a flexed hip

- Laterally rotate on an extended hip

Question 12

Piriformis M. : Innervation

Answer 12

Nerve to Piriformis M.

Question 13

Piriformis M. : Origin

Answer 13

Along the anterior lateral aspect of the sacrum

Question 14

Piriformis M. : Insertion

Answer 14

Trochanteric Fossa

Question 15

Obturator Internus M. : Function

Answer 15

Strong lateral rotator

Question 16

Obturator Internus M. : Innervation

Answer 16

Nerve to obturator internus and superior gemellus

Question 17

Superior Gemellus M. : Innervation

Answer 17

Nerve to obturator internus and superior gemellus

Question 18

Inferior Gemellus M. : Innervation

Answer 18

Nerve to quadratus femoris and inferior gemellus

Question 19

Obturator Externus M.: Function

Answer 19

Lateral rotator

Question 20

Obturator Externus M. : Origin

Answer 20

External margins of obturator foramen

Question 21

Obturator Externus M. : Insertion

Answer 21

Trochanteric fossa

Question 22

Obturator Externus M. : Innervation

Answer 22

Obturator nerve

Question 23

Quadratus Femoris M.: Origin

Answer 23

Inferior to acetabulum

Question 24

Quadratus Femoris M.: Insertion

Answer 24

Quadrate tubercle on the proximal end of the femur ?

Question 25

Quadratus Femoris M.: Innervation

Answer 25

Nerve to quadratus femoris and inferior gemellus

Question 26

Iliotibial Tract (IT Band): Origin

Answer 26

Runs from iliac tubercle

Question 27

Iliotibial Tract (IT Band): Insertion

Answer 27

Tubercle (Gerdy’s) on lateral tibial condyle

Question 28

Iliotibial Tract (IT Band): Functions

Answer 28

• Assists in decelerating adduction of thigh (so assists in abduction)
• Laterally stabilizes knee
• Extends leg, compensate for quadriceps paralysis via gluteus maximus flexion
• Pulls patella laterally, antagonist of vastus medialis, and synergist with flexing vastus laterals for this action
• Stretch to treat chondromalacia patella

Question 29

Obturator Internus M. : Insertion

Answer 29

Greater trochanter of the femur

Question 30

Superior and Inferior Gemellus Ms. : Function

Answer 30

Act together to perform lateral rotation

Question 31

Superior and Inferior Gemellus Ms. : Origin

Answer 31

• Super = on the ischial spine

- Inferior = Just beneath the ischial spine

Question 32

Superior and Inferior Gemellus Ms. : Insertion

Answer 32

Trochanter and trochanteric fossa of the femur

Question 33

Quadratus Femoris M. : Function

Answer 33

Strong lateral rotator