KIN 100 - Gluteal Region (lecture 20)

Question 1

Gluteus maximus

Answer 1

Proximal attachment: Ilium, posterior to the gluteal line

Distal attachment:
Gluteal tuberosity
Lateral condyle of the tibia (Gerdy’s tubercle) via the IT band

Innervation: Inferior gluteal nerve

Actions:
Hip extension
Hip lateral rotation

Question 2

Gluteus medius

Answer 2

Proximal attachment: Ilium, between posterior and anterior gluteal lines

Distal attachment: Greater trochanter

Innervation: Superior gluteal nerve

Actions:
Hip abduction
Hip medial rotation

Question 3

Gluteus minimus

Answer 3

Proximal attachment: Ilium , between anterior and inferior gluteal lines

Distal attachment: Greater trochanter

Innervation: Superior gluteal nerve

Actions:
Hip abduction
Hip medial rotation

Question 4

Tensor fascia lata

Answer 4

Proximal attachment: ASIS

Distal attachment: Lateral condyle of tibia (Gerdy’s tubercle) via IT band

Innervation: Superior gluteal nerve

Actions:
Hip abduction
Hip medial rotation

Question 5

Piriformis

Answer 5

Proximal attachment: Anterior surface of sacrum

Distal attachment: Greater trochanter

Innervation: Nerve to piriformis

Action: Hip lateral rotation

Question 6

Superior Gemellus

Answer 6

Proximal attachment: Ischial spine

Distal attachment: Trochanteric fossa

Innervation: Nerve to obturator internus

Actions: Lateral hip rotation

Question 7

Obturator Internus

Answer 7

Proximal attachment: Internal surface of obturator membrane

Distal attachment: Trochanteric fossa

Innervation: Nerve to obturator internus

Actions: Lateral Hip rotation

Question 8

Inferior Gemellus

Answer 8

Proximal attachment: Ischial tuberosity

Distal attachment: Trochanteric fossa

Innervation: Nerve to quadratus femoris

Action: Hip lateral rotation