Muscles- gluteal region and posterior thigh Flashcards
Gluteus maximus
attachment
ilium posterior to posterior gluteal line, posterior surface of sacrum and coccyx, sacrotuberous ligament, iliotibial tract to anterolateral tubercle of tibia, and gluteal tuberosity of femur
Gluteus maximus
action
extends and laterally rotates thigh, extends trunk
Gluteus maximus
innervation
inferior gluteal nerve (L5-S2)
Gluteus medius
attachment
ilium between anterior and posterior gluteal lines and greater trochanter of femur
Gluteus medius
action
abducts and medially rotates thigh; keeps pelvis level when standing on one leg
Gluteus medius
innervation
superior gluteal nerve (L5-S1)
Gluteus minimus
attachment
ilium between anterior and inferior gluteal lines and greater trochanter of femur
Gluteus minimus
action
abducts and medially rotates thigh; keeps pelvis level when standing on one leg
Gluteus minimus
innervation
superior gluteal nerve (L5-S1)
Tensor fascia latae
attachment
anterior superior iliac spine, iliac crest, iliotibial tract to anterolateral tubercle of tibia
Tensor fascia latae
action
abducts and medially rotates thigh; keeps pelvis level when standing on one leg
Tensor fascia latae
innervation
superior gluteal nerve (L5-S1)
Piriformis
attachment
anterior surface of sacrum to greater trochanter of femur
Piriformis
action
laterally rotates an extended thigh; abducts a flexed thigh
Piriformis
innervation
branches of anterior rami S1-S2
Obturator internus
attachment
internal surface of obturator membrane, internal margin of obturator foramen, greater trochanter of femur
Obturator internus
action
laterally rotates an extended thigh; abducts a flexed thigh
Obturator internus
innervation
nerve to obturator internus (L5-S1)
Superior gemellus
attachment
ischial spine to greater trochanter femur
Superior gemellus
action
laterally rotates an extended thigh; abducts a flexed thigh
Superior gemellus
innervation
nerve to obturator internus (L5-S1)
Inferior gemellus
attachment
ischial tuberosity to greater trochanter femur
Inferior gemellus
action
laterally rotates an extended thigh; abducts a flexed thigh
Inferior gemellus
innervation
nerve to quadratus femoris (L5-S1)
Quadratus femoris
attachment
ischial tuberosity to intertrochanteric crest of femur
Quadratus femoris
action
laterally rotates thigh
Quadratus femoris
innervation
nerve to quadratus femoris (L5-S1)
Semitendinosus
attachment
ischial tuberosity and inferior to medial condyle of tibia via pes anserinus
Semitendinosus
action
extends thigh or trunk; flexes and rotates leg medially
Semitendinosus
innervation
tibial nerve (L5-S2)
Semimembranosus
attachment
ischial tuberosity and medial epicondyle of tibia
Semimembranosus
action
extends thigh or trunk; flexes and rotates leg medially
Semimebranosus
innervation
tibial nerve (L5-S2)
Biceps femoris-long head
attachment
ischial tuberosity to head of fibula
Biceps femoris-long head
action
extends thigh or trunk; flex and rotate leg laterally
Biceps femoris-long head
innervation
tibial nerve (L5-S2)
Biceps femoris-short head
attachment
linea aspera and lateral supracondylar line of femur to head of fibula
Biceps femoris-short head
action
flex and rotate leg laterally
Biceps femoris-short head
innervation
common fibular nerve (L5-S2)
