Muscles of the Gluteal Region Flashcards
Main action of the gluteus maximus?
Extension of hip joint
Name the muscles of the gluteal region?
- Gluteus maximus
- Gluteus medius
- Gluteus minimus
- Piriformis
- Obturator internus
- Glemelli (sup. & inf.)
- Quadratus femoris
Main action of the gluteus medius?
- Abduction of thigh
- Med. rotation of thigh
Main action of the gluteus minimus?
- Abduction of thigh
- Med. rotation of thigh
Main action of the piriformis?
- Lat. rotates thigh
- Steadies femoral head in acetabulum
Main action of the obturator internus?
- Lat. rotates thigh
- Steadies femoral head in acetabulum
Main action of the glemelli (sup. & inf)?
- Lat. rotates thigh
- Steadies femoral head in acetabulum
Main action of the quadratus femoris?
- Lat. rotates thigh
- Steadies femoral head in acetabulum
Innervation of gluteus maximus?
Inf. gluteal n.
Innervation of gluteus medius?
Sup. gluteal n.
Innervation of gluteus minimus?
Sup. gluteal n.
Innervation of piriformis?
Branches of ventral rami of S1 & S2
Innervation of obturator internus?
Nerve to obturator internus
Innervation of glemelli (sup. & inf.) ?
Nerve to obturator internus
also goes to sup. & inf. glemelli
Innervation of quadratus femoris?
Nerve to quadratus femoris
Proximal attachment of the gluteus maximus?
- Ilium post. to post. gluteal line
- Dorsal surface of sacrum & coccyx
Distal attachment of the gluteus maximus?
- Iliotibial tract (inserts into lat. condyle of tibia)
- Gluteal tuberosity of femur
Proximal attachment of the gluteus medius?
Ext. surface of ilium between ant. & post. gluteal lines
Distal attachment of the gluteus medius?
Lat. surface of greater trochanter of femur
Proximal attachment of the gluteus minimus?
Ext. surface of ilium between ant. & inf. gluteal lines
Distal attachment of the gluteus minimus?
Ant. surface of greater trochanter of femur
Proximal attachment of the piriformis?
Ant. surface of sacrum
Distal attachment of piriformis?
Sup. border of greater trochanter of femur
Proximal attachment of the obturator internus?
Obturator membrane
Distal attachment of the obturator internus?
Med. surface of greater trochanter of femur
Proximal attachment of the glemelli (sup. & inf.)?
- Superior: ischial spine
- Inferior: ischial tuberosity
Distal attachment of the glemelli?
Med. surface of greater trochanter of femur
Proximal attachment of the quadratus femoris?
Lat. border of ischial tuberosity
Distal attachment of the quadratus femoris?
Quadrate tubercle on femur
