Medial Femoral Muscles

Question 1

Adductor brevis

Answer 1

(L2-4)

attachments- from inferior pubic ramus to distal 2/3 pectineal line and medial lip linea aspera

actions- adducts and flexes hip

innervation- obturator nerve

Question 2

Adductor longus

Answer 2

(L2-4)

attachments- from pubic crest to medial lip linea aspera

actions- adducts, medially rotates, and flexes hip

innervation- obturator nerve

Question 3

Adductor magnus

Answer 3

(adductor part: L2-4 & hamstrings part: L4-S1)

attachments- from the inferior pubic ramus, ischial ramus, & ischial tuberosity to gluteal tuberosity, linea aspera (adductor part), medial supracondylar ridge & adductor tubercle of the femur (hamstring part)

actions- adducts, flexes (adductor part) & extends (hamstring part) hip

innervation- obturator nerve (adductor part) & tibial division of the sciatic nerve (hamstring part)

Question 4

Gracilis

Answer 4

(L2-4)

attachments- from the body of the pubis & inferior pubic ramus to the medial surface of tibia, distal to condyle, proximal to insertion of semitendinosus, lateral to insertion of sartorius

actions- flexes & medially rotates the knee, and adducts hip

innervation- obturator nerve

Question 5

Pectineus

Answer 5

(L2-4)

attachments- from superior pubic ramus to the pectineal line

actions- adducts, flexes hip

innervation- femoral nerve & obturator nerve

Question 6

Obturator externus

Answer 6

(L3-4)

attachments- from rami of the pubis and ischium & external surface obturator membrane to trochanteric fossa

actions- laterally rotates hip

innervation- obturator nerve