Muscles of the Gluteal Region- Superficial Compartment

Question 1

Gluteus Maximus

Answer 1

origin: dorsal illium, sacrum, coccyx, sacrotuberous ligament and illiac crest
insertion: gluteal tuberosity and illiotibial tract
innervation: inferior gluteal N.
action: hip extension, lateral rotation of the thigh

Question 2

Gluteus Medius

Answer 2

origin: ilium, between anterior and posterior gluteal lines
insertion: greater trochanter of femur, anterior aspect
innervation: superior gluteal N.
action: stabilizaiton of pelvis during gait, abduction of thigh, medial rotation of thigh (ant. fibers)

Question 3

Gluteus Minimus

Answer 3

origin: ilium, between anterior and inferior gluteal lines
insertion: greather trochanter of femur, anterior aspect
innervation: superior gluteal N.
action: stabilization of the pelvis during gait, abduction of thigh, medial rotation of thigh (ant. fibers)

Question 4

Tensor Fascia Latae

Answer 4

origin: iliac crest, lateral aspect
insertion: iliotibial tract
innervation: superior gluteal N.
action: stabilization of the knee in extension, hip flexion (weak), abduction of thigh