Gluteal Region and Posterior Thigh Flashcards Preview

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Flashcards in Gluteal Region and Posterior Thigh Deck (27):
1

Insertion and origin of the Gluteus maximus?

Origin: ilium, sacrum, coccyx
insertion: ITB, gluteal tuberosity of femur

2

Insertion and origin of gluteus minimus and maximus?

Origin: Ilium
Insertion: Great trochanter

3

Action of Gluteus minimus/maximus?

Abducts and internally rotates thigh

4

Action of gluteus maximus?

The extend and laterally rotate the thigh

5

Clinical significance of piriformis

Marks the top of the sciatic nerve. superior to the two gemellus muscles and obturator internus.

6

What brings gemellus superior, obturator internus and gemellus inferior together?

A common tendon that inserts onto the greater trochanter of the femur.

7

What is the common action of piriformis, obturator internus and the gemellus muscles.

External rotation of the thigh

8

Superficial Gluteal muscles and their nerve supply

Gluteus maximus (inferior gluteal nerve)
Gluteus maximus and minimus (superior gluteal neve)

9

Deep Gluteal muscles and their action

Piriformis
gemellus sup & inf
obturator internus

Short external rotaters

10

The posterior thigh muscles are?

Biceps femoris
semimembranosis
semitendonosis
adductor magnus (hamstring part)

11

A common origin of hamstring muscles is?

Ischial tuberosity

12

Where does the short head of the biceps femoris originate from?

Linea aspera

13

What is the insertion of biceps femoris?

Head of fibula

14

What is the insertion of seitendonosis?

pes anserinus

15

what is the insertion of semimembranosis?

medial condyl of tibia

16

What is the arterial supply of the gluteal region

Aorta - commoniliac - internal iliac - superior & inferior gluteal arteries.

17

What is the journey of the superior and inferior gluteal arteries?

From the internal iliac artery they travel laterally, leave the pelvis via the greater sciatic foramen, and travel superior and inferior to piriformus

18

What is artery of the sciatic nerve?

'the artery to the sciatic nerve'', which branches off the inferior gluteal artery.

19

Where is it safe to perform intra-gluteal injections?

The lateral side, avoiding the sciatic nerve

20

What is an avulsion fracture?

a bit of bone ripped off with tendon, still attached to tendon.

21

What is piriformis syndrome?

When the sciatic nerve is compressed by the piriformis muscles. Pain tingling and numbness along buttocks and posterior thigh will be felt.

22

What is the origin and insertion of the sacrospinous ligament?

Origin: Sacrum
Insertion: ischial Spine

23

What is the origin and insertion of the sacrotuberous ligament?

Origin: sacrum
Insertion: ischial tuberosity

24

What passes through the Greater Sciatic Foramen?

Nerves and arteries pass outwards to the lower limb

25

What passes through the lesser sciatic foramen?

Nerves and arteries pass back inward to the axial region

26

What forms the acetabulum?

Fusion of the three bones, ilium, ischium and pubis

27

What is different about the acetabulum in childhood/uterine?

The three bones haven't yet ossified, the are still cartilagenous. This cartilage is called Triradient cartilage