Lower Limb - Gluteal Region

Question 1

1. 1. Which muscle(s) are innervated by the super gluteal nerve?
2. 2. Name their action
3. 1 Which muscle(s) are innervated by the inferior gluteal nerve innervate?
4. 2. Name their action

Answer 1

1. 1. Gluteus medius, gluteus minimus and tensor fascia Lata (TFL)
2. 2. Stabilize the hip joint, hip abduction - TFL stabilizes knee joint in extension
3. 1. Gluteus maximus
4. 2. Hip extension

Question 2

1. 1. Name the muscle(s) of the deep layer of the gluteal region
2. 2. Name their action
3. 3. Where do they insert?

Answer 2

1. 1. Piriformis, gemellus superior, obturator internus, gemellus inferior, quadratus femoris
2. 2 Hip lateral rotation (LR) and abduction (note QF pure LR)

1.3.
Piriformis, OI - insert onto GT
Superior and inferior gemellus - insert onto OI tendon
QL - inserts intertrochanteric crest

Question 3

1. Which anatomical structure divides the greater and lesser foramen?
2. 1. Which structures pass above?
3. 2. Which structures pass below?

Answer 3

1. Piriformis muscle

2. 1.

Question 4

Which nerve innervates obturator internus and superior gemellus?

Answer 4

Nerve to obturator internus (L5, S1, S2)

Question 5

Which nerve innervates gemellus inferior and quadratus femoris?

Answer 5

Nerve to quadratus femoris (L5, S1)