Gluteals

Question 1

Gluteus Maximus action origin insertion and nerve innervation

Answer 1

A
All fibers: Extend the hip (coxal joint)
Laterally rotate the hip (coxal joint)
Abduct the hip (coxal joint)
Lower fibers: Adduct the hip (coxal joint)
O
Coccyx, edge of sacrum, posterior iliac crest, sacrotuberous and sacroiliac ligaments
I
Iliotibial tract (upper fibers) and gluteal tuberosity (lower fibers)
N
Inferior gluteal L5, S1, 2

Question 2

Gluteus medius action origin insertion and nerve innervation

Answer 2

All fibers: Abduct the hip (coxal joint)
Anterior fibers: Flex the hip (coxal joint) Medially rotate the hip (coxal joint)
Posterior fibers: Extend the hip (coxal joint) Laterally rotate the hip (coxal joint)
O
Gluteal surface of ilium, between posterior and anterior gluteal lines, just below the iliac crest
I
Lateral aspect of greater trochanter
N
Superior gluteal L4, 5, S1

Question 3

Gluteus minimus action origin insertion and nerve innervation

Answer 3

A
Abduct the hip (coxal joint)
Medially rotate the hip (coxal joint)
Flex the hip (coxal joint)
O
Gluteal surface of the ilium between the anterior and inferior gluteal lines
I
Anterior aspect of greater trochanter
N
Superior gluteal L4, 5, S1