Deep 6

Question 1

What s the mnemonic for the Deep 6?

Answer 1

Obviously It’s Paramount to Source Good Quality Fruit It Guarantees Outstanding Effervesence

(Obturator Internus, Piriformis, Superior Gemellus, Quadratus Femoris, Inferior Gemellus, Obturator Externus)

Question 2

What are the deep 6 muscles?

Answer 2

1.) Obturator Internus
2.) Piriformis
3.) Superior gemellus
4.) Quadratus Femoris
5.) Inferior Gemellus
6.) Obturator Externus

Question 3

What are the Nerves that innervate this region?

Answer 3

1.) N to piriformis
2.) N to QF + IG
3.) N to SG +OI
4.) Obturator

Question 4

What is the only nerve in this region that is not a “ nerve to _____” what muscle does it innervate?

Answer 4

Obturator nerve
Obturator externus

Question 5

What movement do all of these muscles have in common?

Answer 5

External rotation of the hip

Question 6

What is the only muscle that has an added action? What is it?

Answer 6

Piriformis

Assists with abduction when hip flexed to 90 degrees

Question 7

What are the origins and insertions for these muscles?

Answer 7

1.) Piriformis
O: sacrum (S2-S4)
I: greater trochanter (superior border of medial surface)

2.) Obturator internus
O; Obturator membrane (inner pelvic surface) + Obturator foramen
I: greater trochanter (medial border with SG and IG)

3.) Superior Gemellus
O: Ischial spine
I: greater trochanter ( medial surface with OI and IG)

4.) Inferior Gemellus
O: Ischial tuberosity
I: greater trochanter (medial border, with OI and SG)

5.) Quadratus Femoris
O: Ischial tuberosity ( lateral surface)
I: Femur (quadrate tubercle)

6.) Obturator Externus
O: Obturator Membrane (outer surface) + bone on medial aspect of Obturator foramen
I: Femur ( trochanter fossa)

Question 8

What 3 muscles share an insertion?

Answer 8

1.) Obturator internus
2.) Superior Gemellus
3.) Inferior Gemellus

All attach on the medial border of the greater trochanter

Question 9

What 4 muscles inset onto the greater trochanter?

Answer 9

1.) Piriformis (superior border of medial surface)
2.) Obturator internus ( medial border)
3.) Superior gemellus (medial border)
4.) Iferior Gemellus (medial border)

Question 10

What are the only 2 muscles that do NOT insert on the greater trochanter? Where do they insert?

Answer 10

1.) Quadratus femoris - Quadrate tubercle of femur
2.) Obturator externus- trochanteric fossa of femur