Muscles of Medial Thigh

Question 1

What are the muscles in the medial compartment of the thigh collectively called?

Answer 1

Hip adductors

Question 2

Name the 5 muscles in the medial compartment of the thigh.

Answer 2

Gracilis, obturator externus, adductor brevis, adductor longus, adductor magnus

Question 3

What is the innervation of medial thigh muscles?

Answer 3

Obturator nerve (L2-L4)

Question 4

What is the blood supply of the medial thigh muscles?

Answer 4

Obturator artery

Question 5

Where is the adductor magnus found?

Answer 5

Posterior to the other adductor muscles

Question 6

The adductor magnus is split into 2 parts. Name these 2 parts.

Answer 6

Adductor part and hamstring part

Question 7

What is the origin and insertion of the adductor part of the adductor magnus?

Answer 7

Originates from the inferior rami of the pubis and ischium, attaches linea aspera

Question 8

What is the origin and insertion of the hamstring part of the adductor magnus?

Answer 8

Originates from ischial tuberosity, attaches to adductor tubercle of femur

Question 9

What is the action of the adductor magnus?

Answer 9

Adductor part does adduction at hip, hamstring part does extension at hip

Question 10

What is the innervation of the adductor magnus?

Answer 10

Adductor part innervated by obturator nerve, hamstring part innervated by tibial branch of sciatic nerve

Question 11

Describe the relative positions of the adductor longus, adductor brevis, and adductor magnus.

Answer 11

Adductor longus partially covers the adductor brevis and magnus

Question 12

What is the origin and insertion of the adductor longus?

Answer 12

Originates from body of pubis, attaches to linea aspera

Question 13

What is the action of the adductor longus?

Answer 13

Adduction of thigh

Question 14

What is the innervation of the adductor longus?

Answer 14

Obturator nerve

Question 15

How is the adductor brevis sometimes used as an anatomical landmark?

Answer 15

Lies between anterior and posterior divisions of the obturator nerve, so can be used to find these nerve branches

Question 16

What is the origin and insertion of the adductor brevis?

Answer 16

Originates from body of pubis and inferior rami of pubis, attaches to linea aspera

Question 17

What is the action of adductor brevis?

Answer 17

Adduction of thigh

Question 18

What is the innervation of the adductor brevis?

Answer 18

Obturator nerve

Question 19

What is the origin and attachment of the obturator externus?

Answer 19

Originates from membrane of obturator foramen, passes under neck of femur and attaches to posterior part of greater trochanter (horizontal route)

Question 20

What is the action of the obturator externus?

Answer 20

Adduction and lateral rotation of thigh

Question 21

Describe the relative position of the gracilis

Answer 21

Most superficial and medial muscle of medial compartment

Question 22

What is the gracilis sometimes surgically used for?

Answer 22

Sometimes transplanted to hand, forearm, or face beca

Question 23

What is the origin and insertion of the gracilis?

Answer 23

Originates from body and inferior rami of pubis, attaches to superior medial surface of tibia

Question 24

What is the action of the gracilis?

Answer 24

Adduction of thigh, flexion at knee

Question 25

What is the innervation of the gracilis?

Answer 25

Obturator nerve (L2-L4)

Question 26

What are the spinal root values of the obturator nerve?

Answer 26

L2-L4

Question 27

RICE is a common method of treatment for muscle strain injuries. What does RICE stand for?

Answer 27

Rest, Ice, Compression, Elevation

Question 28

What are the spinal root values of the femoral nerve?

Answer 28

L2-L4

Question 29

Where are the relative positions of the inferior rami of the pubis and ischium?

Answer 29

Both part of the same loop bit, but pubic rami more medial (closer to pubis, which is the central bit of the pelvis), ischium rami more lateral

Question 30

What is the origin and insertion of the Sartorius?

Answer 30

Originates from anterior superior iliac spine, attaches to superior medial surface of tibia

Question 31

Which muscles insert into the superior medial surface of the tibia?

Answer 31

Sartorius and gracilis

Question 32

Which muscles insert into the linea aspera?

Answer 32

Adductor longus, adductor brevis, adductor part of adductor magnus (hamstring part inserts into adductor tubercle of femur)

Question 33

Which muscles originate from the body of the pubis?

Answer 33

Gracilis, adductor longus, adductor brevis (gracilis and adductor brevis also originates from inferior pubic rami)

Question 34

Which muscles originate from the body and inferior rami of the pubis?

Answer 34

Gracilis and adductor brevis