Session 8 - Gluteal region

Question 1

What are the superficial abductors and extenders of the gluteal region?

Answer 1

gluteus minimus, gluteus medius and gluteus maximus. Also contains the tensor fasciae latae, which acts on the knee joint.

Question 2

What the deep lateral rotators of the gluteal region?

Answer 2

quadratus femoris, piriformis, gemellus superior, gemellus inferior and obturator internus

Question 3

What are the actions of the gluteus maximus?

Answer 3

It is the main extensor of the thigh, and assists with lateral rotation. Only used when force required.

Question 4

What is the innervation of the gluteus maximus?

Answer 4

Inferior gluteal nerve

Question 5

What is A?

Answer 5

A Gluteus maximus

Question 6

What is B?

Answer 6

Gluteus medius

Question 7

What is the action of the gluteus medius?

Answer 7

Abduction and medial rotation upon hip flexion. Also prevents pelvic drop.

Question 8

What is the innervation of the gluteus medius?

Answer 8

Superior gluteal nerve

Question 9

Where is gluteus minimus found?

Answer 9

Posterior to gluteus medius

Question 10

What is the action of gluteus minimus?

Answer 10

Abduction and medial rotation upon hip flexion (stronger than medius). Prevents pelvic drop.

Question 11

What is the innervaton of gluteus minimus?

Answer 11

Superior gluteal nerve

Question 12

What happens if superior gluteal nerve injured?

Answer 12

Gluteus minimus and medius paralysed, causing pelvic drop. Patient also walks with gluteal gait - the leg swings out laterally so that the foot can move forward, producing a shuffling or waddling gait.

Question 13

What is A?

Answer 13

B Inerior gluteal nerves

Question 14

What is B?

Answer 14

Superior gluteal nerves

Question 15

What is C?

Answer 15

Sciatic nerves

Question 16

What is D?

Answer 16

Piriformis

Question 17

What is the action of the piriformis?

Answer 17

Lateral rotation and abduction of leg at hip joint

Question 18

What is the innervation of piriformis?

Answer 18

Nerve to piriformis

Question 19

What is important about the piriformis?

Answer 19

Travels through great sciatic foramen and divids it into an inferior and superior part

Question 20

What are A, B and C?

Answer 20

SOI A - Superior gemellus B - Obturator internus C - Inferior Gemellus

Question 21

-What is the action of the oburator internus?

Answer 21

Along with gemelli and quadratus femoris pulls the head of the femur into the acetabulum, stabilising hip joint Lateral rotation and abduction

Question 22

What is the innervation of the obturator internus?

Answer 22

Nerve to obturator internus

Question 23

What are the gemelli superior and inferior seperated by?

Answer 23

Obturnator internus tendon

Question 24

What are the actions of the gemelli?

Answer 24

Lateral rotation and abduction

Question 25

What is the innervation of the superior gemellus muscle?

Answer 25

Innervated by the nerve to obturator internus

Question 26

What is the innervation to the inferior gemelus muscle?

Answer 26

Nerve to the quadratus femoris

Question 27

What is D?

Answer 27

Quadratus femoris

Question 28

What are the actions of the quadratus femoris?

Answer 28

Lateral rotation

Question 29

What is the innervation to quadratus femoris?

Answer 29

Nerve to quadratus femoris