Muscles Of Gluteal Region

Question 0

Deep muscles of the gluteal region?

Answer 0

Piriformis
Obturator internus
Superior and inferior gemelli
Quadratus femoris

Question 1

Superficial muscles of the gluteal region?

Answer 1

Gluteus maximus, medius and minimus

Question 2

Innervation of gluteus maximum?

Answer 2

Inferior gluteal nerve L5, S1, S2

Question 3

Innervation of tensor fasciae latae?

Answer 3

Superior gluteal nerve (L5, S1)

Question 4

How to test the superior gluteal nerve?

Answer 4

Trendelenberg test - look for pelvic drop

Question 5

What is seen in a positive Trendelenberg test?

Answer 5

Patient stands on one leg. Pelvic drop occurs on the raised leg. Recognised by looking for the level of the iliac crests on both sides.

Question 6

Why does the pelvis drop?

Answer 6

When there is damage to the superior gluteal nerve. Gluteus medius and minimus cannot stabilise the pelvis. They normally contract when the contralateral leg is raised which prevents pelvis from dropping on that side.

Question 7

So if the left gluteal muscles are weak, which side of the pelvis will drop?

Answer 7

Right side will drop when stood on left leg.