Medial Thigh

Question 1

Gracilis

Answer 1

Origin: Body of pubis & inferior pubic ramus
Insertion: Medial aspect of proximal tibia
Action: Knee flexion, internal rotation. Assists with hip adduction
Innervation: Obturator n.

Question 2

Adductor brevis

Answer 2

Origin: Body of pubis & inferior pubic ramus
Insertion: Proximal 1/3 of medial lip of linea aspera
Action: Hip adduction
Innervation: Anterior branch of obturator n.

Question 3

Obturator externus

Answer 3

Origin: External surface of obturator membrane
Insertion: Trochanteric fossa of femur
Action: Hip external rotation
Innervation: Posterior branch of obturator n.

Question 4

Adductor longus

Answer 4

Origin: Anterior surface of body of pubis
Insertion: Middle 1/3 of linea aspera of femur
Action: Hip adduction
Innervation: Anterior branch of obturator n.

Question 5

Adductor magnus

Answer 5

Origin: Inferior pubic ramus, ramus of ischium, ischial tuberosity
Insertion: Gluteal tuberosity, linea aspera, medial supracondylar line, adductor tubercle
Action: Hip flexion, adduction, extension
Innervation: Obturator n. & tibial division of sciatic n.