Dissection 2

Question 1

What 2 lines define the quadrants of the gluteal region?

Answer 1

Greater trochanter to PSIS extended from the midpoint of the iliac crest

Question 2

Name the superficial muscles of the gluteal region

Answer 2

Gluteus maximus
Gluteus minimus
Gluteus medius

Question 3

Gluteus maximus proximal attachments

Answer 3

Iliac crest, sacrum, sacrotuberous ligament, coccyx

Question 4

Gluteus maximum distal attachment

Answer 4

Iliotibial tract

Question 5

Gluteus maximus action

Answer 5

(Most powerful) extensor of the hip

Question 6

Attchments of gluteus medius and gluteus minimus

Answer 6

Posterior gluteal aspect of the ilium

Anterolateral aspect of the greater trochanter of the femur

Question 7

Gluteus medius and minimus actions

Answer 7

Abduct and medially (internally) rotate the thigh at the hip joint

Question 8

Nerve supply to the superficial muscles

Answer 8

Gluteus maximum = Inferior gluteal neurovascular bundle

Gluteus Medius & Minimus = superior neurovascular bundle

Question 9

Describe the deep muscle layer of the gluteal region

Answer 9

Piriformis
Lateral (external) rotators of the hip 
Small muscles run transversely between sacrum, ilium, ischial spine & tuberosity medially and greater trochanter of the femur laterally

Question 10

What is the iliotibial tract?

Answer 10

Thickening of the deep fascia of the thigh

Question 11

Pudendal nerve:

Spinal roots & course

Answer 11

S2-S4
Forms in the sacral plexus & emerges into the middle of the gluteal region & supplies the muscles, skin & fascia of the perineum

Question 12

Sciatic nerve:

Spinal roots & course

Answer 12

L4 -S3
Forms in the lumbo sacral plexus & emerges into middle of gluteal region and goes to the posterior compartment of thigh and branches into common fibular and tibial

Question 13

Posterior cutaneous nerve of the thigh:

Spinal roots & course

Answer 13

S1-S3
Forms in sacral plexus & emerges into middle of gluteal region & supplies skin over posterior aspect of the thigh