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Posterior thigh/hip

glutes, piriformis, tricepts coxae

musclesorigin insertioninervationaction
Superior gemellus Ischial spine Medial surface of greater trochanter (trochanteric fossa) Nerve to obturator internus (L5,S1) laterally rotate the ext. thigh, abduct flex thigh, steady femoral head in the acetabulum
Obturator internus Pelvic surface of obturator membrane & surrounding bones Medial surface of greater trochanter (trochanteric fossa) Nerve to obturator internus (L5,S1) laterally rotate the ext. thigh, abduct flex thigh, steady femoral head in the acetabulum
Inferior gemellus Ischial tuberosity Medial surface of greater trochanter (trochanteric fossa) Nerve to quadratus femoris (L5,S1) laterally rotate the ext. thigh, abduct flex thigh, steady femoral head in the acetabulum
piriformis Ant surface of sacrum & sacrotuberous ligament Sup border of greater trochanter of femur Branches of ventral rami S1 & S2 laterally rotate, abd. flexed thigh, steadies femoral head in acetabulum
gluteus maximus Proximal attachment: ilium posterior to posterior gluteal line, dorsal surface of sacrum and coccyx, and sacrotuberous ligament Distal attachment: most fibers end in iliotibial tract that inserts into lateral tibial condyle; some fibers insert on gluteal tuberosity superior gluteal ext. thigh, lat rotation,
gluteus medius Proximal attachment: External surface of ilium between anterior and posterior gluteallines Distal attachment: lateral surface of greater trochanter of femur inf. gluteal abd., medial rotatation, keeps pelvis level when opposite is raised
gluteus minimus Proximal attachment: external surfaceof ilium between anterior and inferior gluteal lines Distal attachment: anterior surface of greater trochanter of femur inf. gluteal abd., medial rotatation, keeps pelvis level when opposite is raised
Created by: scptguy19