MOINA Muscles of Medial Fascial Compartment of the Thigh

Question 1

gracilis

Answer 1

origin: inferior ramus of pubis and ramus of ischium
insertion: upper end of shaft of tibia on medial surface

nerve: obturator nerve

adducts thigh at hip joint; flexes leg at knee joint

Question 2

adductor longus

Answer 2

origin: body of pubis, medial to pubic tubercle
insertion: posterior surface of shaft of femur (linea aspera)

nerve: obturator nerve

adducts thigh at hip joint and assists in lateral rotation

Question 3

adductor brevis

Answer 3

origin: inferior ramus of pubis
insertion: posterior surface of shaft of femur (linea aspera)

nerve: obturator nerve

adducts thigh at hip joint and assists in lateral rotation

Question 4

adductor magnus

Answer 4

origin: inferior ramus of pubis, ramus of ischium, and ischial tuberosity
insertion: posterior surface of shaft of femur, adductor tubercle of femur

nerve: obturator (adductor portion); sciatic nerve (hamstring portion)

adducts thigh at hip joint and assists in lateral rotation; hamstring portion extends thigh at hip joint

Question 5

obturator externus

Answer 5

origin: obturator membrane, ischial and pubic rami
insertion: medial surface of greater trochanter of femur

nerve: obturator nerve

laterally rotates thigh at hip joint