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Flashcards in Pelvis/Buttocks Deck (10)
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Gluteus Maximus

O- posterior ilium to post glut line, sacrum, coccyx, sacrotuberous lig
I- IBT, some in the gluteal tuberosity
INN- inferior gluteal nerve (L5,S1,S2)
A- extend thigh, assists w lat rotation, sit to stand

1

Gluteus medius

O-ext surface of ilium (b/t ant. & post glut line
I- lat surface of great trochanter
INN- SUPERIOR glut nerve (L5,S1)
A- abduct & medially rotate thigh

2

Gluteus minimus

O- ext surface of ilium (b/t ant & post gluteal line)
I- ANTERIOR surface of greater troch
INN-SUPERIOR gluteal nerve (L5,S1)
A- abduct & medially rotate thigh, stabilize pelvis

3

Tensor Fascia Latae

O- ANTERIOR iliac crest (sup of ASIS)
I- ANTERIOR part of ITB
INN- superior gluteal nerve (L5,S1)
A- flex, medially rotate, abducts thigh/ stabilize pelvis

4

Piriformis

O- ANT surface of sacrum, sacrotuberous lig
I- SUPERIOR border greater trochanter
INN- branches of ant rami S1,S2
A- laterally rotates thigh, abducts thigh when knee is bent

5

Superior Gemellus

O- ischial spine
I- medial surface of g troch
INN- (L5,S1)
A- standing:laterally rotates thigh
Knee bent: abducts thigh

6

OBTURATOR Internus

O- OBTURATOR membrane
I- g troch , trochanteric fossa
INN- (L5,S1)
A- standing: lat rotate thigh
Knee bent: abducts thigh

7

Inferior Gemellus

O- ischial tuberosity
I- MEDIAL surface greater troch
INN- (L5,S1)
A- lat rot, knee bent abducts thigh

8

Quadratus femoris

O- LATERAL border of ischial tub
I- QUADRATE tubercle on intertrochanteric crest
INN- L5, S1
A- lat rot, knee bent: abducts thigh

9

Obturator EXTERNUS

O- OBTURATOR membrane, margin of foramen
I- trochanter fossa
INN- ***L2, L3
A- lat rot, abduct thigh when knee bent