Gluteal and Pelvic Region

Question 1

What is the insertion of the obturator internus?

Answer 1

Greater trochanter of femur

Question 2

What is the innervation of the obturator internus?

Answer 2

Nerve to obturator internus

Question 3

What is the action of obturator internus?

Answer 3

Lateral rotation of hip

Abducts flexed femur at hip joint

Question 4

What is the origin of gemellus superior?

Answer 4

Ischial spine

Question 5

What is the insertion of gemellus superior?

Answer 5

Greater trochanter of femur

Question 6

What is the nerve supply to gemellus superior?

Answer 6

Nerve to obturator internus

Question 7

What is the action of gemellus superior?

Answer 7

Lateral rotation of hip

Abducts flexed femur at hip

Question 8

What is the origin of gemellus inferior?

Answer 8

Ischial tuberosity

Question 9

What is the insertion of gemellus inferior?

Answer 9

greater trochanter of femur

Question 10

What is the nerve supply to gemellus inferior?

Answer 10

Nerve to quadratus femoris

Question 11

What is the action of gemellus inferior?

Answer 11

Lateral rotation of hip

Abducts flexed femur at hip

Question 12

What is the origin of quadratus femoris?

Answer 12

lateral ischium

Question 13

What is the insertion of quadratus femoris?

Answer 13

Intertrochanteric crest of femur

Question 14

What is the nerve supply to quadratus femoris?

Answer 14

nerve to quadratus femoris

Question 15

What is the action of quadratus femoris?

Answer 15

lateral rotation of hip

Question 16

What is the origin of the obturator internus?

Answer 16

Antero-lateral pelvis

Question 17

What is the origin of psoas major?

Answer 17

T12-L4

Question 18

What is the insertion of psoas major?

Answer 18

Lesser trochanter of femur

Question 19

What is the origin of psoas minor?

Answer 19

T12, L1

Question 20

What is the insertion of psoas minor?

Answer 20

Iliopectineal eminence of pelvis

Question 21

Which muscle is often absent in the pelvic region?

Answer 21

Psoas minor

Question 22

Where is the trochanteric bursa?

Answer 22

Situated between gluteus maximus and the greater trochanter

Question 23

Where is the ischiogluteal bursa?

Answer 23

Near the ischial tuberosity (sitting down can inflame it)

Question 24

Name the superficial gluteal muscles

Answer 24

Gluteus maximus
Gluteus medius
Gluteus minimus

Question 25

What is the origin of gluteus maximus?

Answer 25

Iliac crest, sacrum and coccyx

Question 26

What is the insertion of gluteus maximus?

Answer 26

Iliotibial tract

Question 27

Which nerve supplies the gluteus maximus?

Answer 27

Inferior gluteal nerve

Question 28

What is the arterial supply to gluteus maximus?

Answer 28

Superior and inferior gluteal arteries

Question 29

What is the action of gluteus maximus?

Answer 29

``` Standing up (extends the hip from a flexed position) Lateral rotation ```

Question 30

Where do gluteus medius and minimus both arise?

Answer 30

Posterior, lateral ilium

Question 31

Where do gluteus minimus and medius insert?

Answer 31

Greater trochanter of femur

Question 32

What are the actions of the gluteus medius and minimus?

Answer 32

Medial rotation Abduction Stabilise the pelvis when standing on one leg

Question 33

What are the deep muscles of the gluteal region?

Answer 33

``` Piriformis Superior gemellus Inferior gemellus Obturator internus Quadratus femoris ```

Question 34

What is the origin of the piriformis?

Answer 34

Anterior sacrum

Question 35

What is the insertion of the piriformis?

Answer 35

Greater trochanteric of femur

Question 36

What is the origin of the gemelli?

Answer 36

Ischium

Question 37

What is the origin of quadratus femoris?

Answer 37

Ischial tuberosity

Question 38

What is the insertion of quadratus femoris?

Answer 38

Intertrochanteric crest of femur

Question 39

Describe the route of the sciatic nerve

Answer 39

Passes posteriorly through the greater sciatic foramen Passes inferior to piriformis Passes behind the long head of biceps femoris

Question 40

Where would you perform a dorsogluteal injection?

Answer 40

Upper lateral quadrant | Attempt to avoid sciatic nerve damage

Question 41

What is the origin of tensor fascia lata?

Answer 41

Anterior iliac crest

Question 42

What is the insertion of tensor fascia lata?

Answer 42

iliotibial tract

Question 43

What is the action of tensor fascia lata?

Answer 43

Abduction and medial rotation of thigh

Question 44

What is the nerve supply to tensor fascia lata?

Answer 44

Superior gluteal nerve

Question 45

Why is the piriformis an important landmark?

Answer 45

Divides the gluteal region into an inferior and superior part

Question 46

What is the iliotibial tract?

Answer 46

Longitudinal thickening of fascia lata Strengthened by fibres from gluteus maximus Extends from iliac tubercle to lateral tibial condyle