Adductor Musculature

Question 1

Adductor magnus

Answer 1

Origin:
- Anterior fibers: inferior pubic ramus
- Posterior fibers: ischial tuberosity
- Oblique fibers: ischial ramus
Insertion:
- Proximal 1/3 of linea aspera
- Adductor tubercle
Action:
- Adducts hip
- Posterior fibers extend and laterally rotate the hip
Nerve:
- Anterior fibers: obturator
- Posterior fibers: tibial

Question 2

Adductor longus

Answer 2

Origin:
- Anterior surface of pubis, just inferior to the pubic ramus
Insertion:
- Medial lip of linea aspera on middle half of femur
Action:
- Adducts hip
- Flexes hip (from extended position)
Nerve:
- Obturator
- L2-4

Question 3

Adductor brevis

Answer 3

Origin:
- Body & inferior pubic ramus
Insertion:
- Superior portion of linea aspera
Action:
- Adducts hip
- Flexes hip (from extended position)
Nerve:
- Obturator
- L2-4

Question 4

Gracilis

Answer 4

Origin:
- Inferior pubic ramus
Insertion:
- Medial surface of proximal tibia, inferior to tibial condyle
- Contributes to pes anserine
Action:
- Adducts hip
- Flexes knee
- Medially rotates tibia
Nerve:
- Obturator
- L2-4

Question 5

Pectineus

Answer 5

Origin:
- Pectineal line of pubis
Insertion:
- Pectineal line of femur
Action:
- Hip adduction
- Flexes hip
- Medially rotates hip
Nerve:
- Femoral and accessory obturator