- See:
external rotators of the hip:
Origin: superior aspect of external border of the tuberosity at ischium;
Insertion: superior aspect of the linea quadrata, the line which extends downward from the intertrochanteric crest of femur;
Synergists:
piriformis, obturator externus,
obturator internus,
gemellus superior, gemellus inferior;
Action: external rotation of the femur at the hip;
Nerve Supply: sacral plexus,
L5,
S1,
S2; (see
innervation)
- Discussion:
- anterior to
quadratus femoris,
MFCA divides into ascending branch to trochanteric fossa
of femur & transverse branch to hamstring muscles beyond the ischial tuberosity;
- transverse branch appears between
quadratus femoris & upper border of
adductor magnus
- hence, if the muscle is ligated, these arteries may also be ligated;
