HIP Posterior Region Deep

Question 0

O. obturator foramen & obturator membrane
(Internal/posterior surface of pelvis)
I. greater trochanter (medial aspect)
N. nerve to obturator internus
A. lateral rotation of hip joint
abduction of thigh when hip is flexed
S. Gemellus superior and inferior, obturator externus, quadratis de pros, piriformis

Answer 0

Obturator Internus

Question 1

O. anterior sacrum (occasionally sacrotuberous ligament)
I. greater trochanter
N nerve to piriformis.
A lateral rotation of hip
S. gemellus superior &inferior, obturator internus & externus, quadratis femoral

Answer 1

Piriformis

Question 2

O. obturator foramen & obturator membrane. (External/anterior surface)
I. trochanteric fossa of femur
N. Obturator nerve (L2, L3, L4)

Answer 2

Obturator Externus

Question 3

O. superior: ischial spine
      inferior: ischial tuberosity
I.  greater trochanter
A. lateral rotation of hip
N. Lateral to obturator internus

Answer 3

Superior Gemellus

Question 4

…

Answer 4

Inferior Gamellus

Question 5

O.  ischial tuberosity (lateral aspect)
I.    inter trochanteric crest of femur
N.  Nerve to quadratis femoris.
A.   lateral rotation of hip joint
adduction of thigh (weak action)
S.   gemellus superior & inferior, obturator internus & externus, pisiform is

Answer 5

Quadratus Femoris