Week 3 - Muscles Of The Pelvic Region Flashcards
What does the superficial gluteal region comprise of?
- gluteus Maximus
- gluteus medius
Origin of the gluteus Maximus
- Sacrotuberous ligament
- Posterior gluteal line
Insertion of the gluteus Maximus ?
- gluteal tuberosity
- iliotibial band
Origin of the gluteus medius ?
- anterior gluteal line
- inferior gluteal line
Insertion of the gluteus medius?
- greater trochanter
What does the deep gluteal region comprise of?
- the cut edges of the gluteus max
- the cut edges of the gluteus med
- gluteus minimus
- the 6 lateral rotators
What are the 6 lateral hip rotators?
1- Piriformis
2- Gemellus superior
3- Obturator internus
4- Gemellus inferior
5- Obturator externus
6- Quadratus Femoris
What is the origin of the piriformis
Anterior surface of the sacrum, gluteal surface of ilium
What is the insertion of the piriformis ?
The apex of the greater trochanter of the femur
What are actions of the piriformis muscle
Thigh external rotation, thigh abduction from flexed hip, stabilises head of femur in acetabulum
Origin of the gemellus superior
Ischial spine
Insertion of the gemellus superior
Medial surface of the greater trochanter of the femur (via tendon of obturator internus)
Actions of the gemellus superior
Thigh external rotation, thigh abduction (from flexed hip), stabilises head of femur in acetabulum
Origin of obturator internus
Posterior surface of the obturator membrane
Insertion of obturator internus
Medial surface of the greater trochanter of the femur
Actions of the obturator internus muscle
External rotation of extended thigh, abduction of flexed thigh, stabilisation of hip joint
Origin of gemellus inferior
Ischial tuberosity
Insertion of gemellus inferior
Medial surface of the greater trochanter of the femur, via tendon of obturator internus
Actions of gemellus inferior muscle
Thigh external rotation, thigh abduction from flexed hip, stabilises head of femur in acetabulum
Origin of the obturator externus
Anterior surface of obturator membrane, bony boundaries of obturator foramen
Insertion of obturator external muscle
Trochanteric fossa of femur
Actions of the obturator externus
Thigh external rotation, thigh abduction from flexed hip, stabilises head of femur in acetabulum
Origin of quadratus femoris
Ischial tuberosity
Insertion of quadratus femoris muscle
Intertrochanteric crest of femur