Deep Gluteal Muscles/Lateral Rotators Flashcards
Originates from ischial spine
Gemellus superior
Originates from ischial tuberosity
Gemellus inferior
Originates from lateral aspect of ischial tuberosity
Quadratus femoris
Originates from obturator membrane and adjacent bone
Obturator externus
Originates from pubis and ischium at obturator foramen
Obturator internus
Originates from anterior surface of sacrum
Piriformis
Inserts onto greater trochanter of femur
Gemellus inferior and superior
Passes under the neck of femur and inserts into the posterior aspect of greater trochanter
Obturator externus
Inserts intoQuadrate tubercle on intertrochanteric crest
Quadratus femoris
Travels inferiorly and laterally through the greater sciatic foramen and inserts onto the upper border of greater trochanter
Piriformis
Muscle passes through lesser sciatic foramen and inserts into the medial side of greater trochanter
Obturator internus
Lateral rotation and abduction of thigh
Piriformis, gemellus inferior and superior , obturator internus
Lateral rotation of thigh
Quadratus femoris
Lateral rotation and adduction of thigh
Obturator externus
Nerve to piriformis
Piriformis
Nerve to obturator internus
Obturator internus and gemellus superior
Obturator nerve
Obturator externus
Nerve to quadratus femoris
Gemellus inferior and quadratus femoris
Branches of internal iliac artery ( inferior gluteal, superior gluteal, internal pudendal )
Piriformis and gemellus superior
Branches of obturator artery
Obturator internus
Median circumflex femoral artery
Gemellus inferior
Inferior gluteal artery
Quadratus femoris
Obturator artery
Median circumflex femoral artery
Obturator externus
