Anterior and Medial Compartment of the Thigh

Question 1

Muscles of the Medial Thigh Compartment Muscle Origin Insertion Innervation Function

Answer 1

Gracilis

• A line on the external surfaces of the body of the pubis,

the inferior pubic ramus, and the ramus of the ischium

Insert

Medial surface of proximal shaft of tibia

Obturator nerve (L2, L3)

Adducts thigh at hip joint and flexes leg at knee joint

Pectineus

Pectineal line (pecten pubis) and adjacent bone of pelvis

Oblique line extending from base of lesser trochanter to linea aspera on posterior surface of proximal femur

Femoral nerve (L2, L3)

Adducts and flexes thigh at hip joint

Adductor longus

External surface of body of pubis (triangular depression inferior to pubic crest and lateral to pubic symphysis)

Linea aspera on middle one-third of shaft of femur

Obturator nerve (anterior division) (L2, L3, L4)

Adducts and medially rotates thigh at hip joint

Adductor brevis

External surface of body of pubis and inferior pubic ramus

Insert

Posterior surface of proximal femur and upper one-third of linea aspera Obturator nerve (L2, L3)

Adducts and medially rotates thigh at hip joint

Adductor magnus

Adductor part—ischiopubic ramus

Posterior surface of proximal femur, linea aspera, medial supracondylar line

Obturator nerve (L2, L3, L4)

Adducts and medially rotates thigh at hip joint

Hamstring part—ischial tuberosity
Adductor tubercle and supracondylar line

Sciatic nerve (tibial division) (L2, L3, L4)

Obturator externus

External surface of obturator membrane and adjacent bone

Insert

Trochanteric fossa Obturator nerve (posterior division) (L3, L4)

Laterally rotates thigh at hip joint

Question 2

Nerve supply to the medial compartment of the leg

Answer 2

Obturator nerve from the Lumbar Plexus

nerve root origin, L2, 3, 4

Adductor Longus, L2, 3, 4

Adductor brevis receives supply from the nerve root L2, L3

Adductor magnus part, L2,3,4 from the posterior branch

hamstring part: L4 from sciatic tibial branch

Question 3

Arterial

arterial supply to the medial compartment of the leg is from:

Question 4

Where do the quadriceps muscle receive their arterial supply?

Answer 4

The quadriceps muscle receive their blood supply from the lateral femoral circumflex artery of the Profundus Femoral Artery.

https://www.brainscape.com/decks/6299538/cards/222963708/edit#

Question 5

Arterial Supply to the Iliopsoas and Pectineus muscle

Answer 5

The illiopsoas and the pectineus muscle receive their blood supply from the medial femoral circumflex artery.

Question 6

Anterior thigh muscles receive their nerve supply from?

Answer 6

Femoral nerve L2, L3, L4

Rectus and the 3 vastus muscles, L2-L4

Sartorius, illicus,pectineus- femoral nerve, L2 and L3

psoas major/minor, from the anterior rami of L1,L2, L3

Question 7

Arterial supply to the adductor group muscles

Answer 7

The adductor group receives their blood supply from the perforating branch of the Profundus femoris artery and the medial femoral circumflex artery.

Question 8

The medial thigh muscles receive their nerve supply from the ________,

except the hamstring part of adductor magnus which is supplied by the tibial part of the sciatic nerve. Nerve root?

Answer 8

obturator nerve, L2-L4

L4 - hamstring part of adductor magnus

adductor magnus - obturator nervec posterior branch, L2,3,4

Adductor brevis - obturator nerve, l2, l3

Adductor longus - obturator nerve, l2-l3