Muscles of the gluteal region (dave's notes)

Question 1

What is the origin and insertion of gluteus maximus?

Answer 1

Origin: Outer surface of the ilium behind the posterior gluteal line and posterior third of the iliac crest, lumbar fascia, lateral mass of the sacrum, ST ligament and coccyx
Insertion: Deepest 1/4 into the gluteal tuberosity of the femur. Remaining 3.4 into the iliotibial tract.

Question 2

What is the origin and insertion of gluteus medius?

Answer 2

Origin: Outer upper surface of the ilium between posterior and middle gluteal lines
Insertion: Posteriolateral surface of the greater trochanter of the femur.

Question 3

List the muscles of the gluteal region

Answer 3

Gluteus maximus
Gluteus medius
Gluteus minimus
Piriformis

Question 4

What is the origin and insertion of gluteus minimis?

Answer 4

Outer surface of the ilium between posterior and anterior gluteal lines

Question 5

What is the origin and insertion of piriformis?

Answer 5

Origin: Arises from 2,3,4 costotransverse bars of the anterior sacrum between sacral foramina

Question 6

What is the action and innervation of gluteus maximus?

Answer 6

Action: Extends and laterally orates the hip
Innervation: Inferior gluteal nerve

Question 7

What is the action and innervation of gluteus medius?

Answer 7

Action: Abducts and medially rotates the hip. Tilts pelvis on walking.
Innervation: Superior gluteal nerve above piriformis.

Question 8

What is notable about gluteus maximus?

Answer 8

This is the largest muscle in the body

Question 9

What is the action and innervation of gluteus minimus?

Answer 9

Action: Abducts and medially rotates the hip. Tilts pelvis on walking.
Innervation: Superior gluteal nerve.

Question 10

What is the action and innervation of piriformis?

Answer 10

Action: Laterally rotates and stabilises the hip
Innervation: Anterior primary rami of S1,2

Question 11

What is notable about the position of piriformis?

Answer 11

Passes through the greater sciatic foramen??