Muscles of Gluteal Region Flashcards
What is the insertion of the Gluteus Maximus
Most fibers end in iliotibial tract, which inserts into lateral condyle of tibia; some fibers insert on gluteal tuberosity
What is the origin of the Gluteus Maximus
ilium posterior to posterior gluteal line; dorsal surface of sacrum and coccyx; sacrotuberous ligament
What is the innervation of Gluteus Maximus
Inferior Gluteal Nerve (L5, S1, S2)
What is the action of Gluteus Maximus
extends hip joint between flexed and standing positions and assists in its lateral rotation; steadies thigh and assists in rising from sitting postion
What is the origin of the Gluteus Medius
External surface of ilium between anterior and posterior gluteal lines
What is the insertion of Gluteus Medius
lateral surface of greater trochanter of femur
What is the innervation of Gluteus Medius
superior gluteal nerve (L4, L5, S1)
What is the action of Gluteus Medius
Abduct and anterior portions medially rotate hip joint; keep pelvis level when opposite limb is elevated
What is the origin of the Gluteus Minimus
external surface of ilium between anterior and inferior gluteal lines
What is the insertion of the Gluteus Minimus
anterior surface of greater trochanter
What is the innervation of Gluteus Minimus
Superior gluteal Nerve (L4, L5, S1)
What is the action of Gluteus Minimus
Abduct and anterior portions medially rotate hip joint. keep pelvis level when opposite limb is elevated
What is the origin Tensor fasciae Latae
anterior superior iliac spine; anterior part of iliac crest
What is the insertion of Tensor fasciae Latae
iliotibial tract which attaches to lateral condyle of tibia (gerdy tubercle)
What is the innervation of Tensor fasciae Latae
Superior Gluteal Nerve (L4, L5, S1)
What is the origin of Gemelli (superior and inferior)
Superior: Ischial Spine
Inferior: Ischial Tuberosity
What is the insertion of Gemelli (superior and inferior)
Medial surface of greater trochanter (trochanteric fossa)
What is the innervation of Gemelli (superior and inferior
Superior: nerve to obturator internus (L5, S1)
Inferior: nerve to quadratus femoris (L5,S1)
What is the action of the Gemelli (superior and inferior)
laterally rotate extended hip joint; abduct flexed hip joint; steady femoral head in acetabulum (stabilizes hip joint)
What is the origin of Quadratus Femoris
lateral border of ischial tuberosity
What is the insertion Quadratus Femoris
Quadrate tubercle on intertrochanteric crest of femur and area inferior to it
What is the innervation of Quadratus Femoris
Nerve to quadratus femoris (L5, S1)
What is the action of Quadratus Femoris
laterally rotates hip joint; also pulls femoral head into acetabulum to stabilize hip joint/pelvis
