Medial Thigh

Question 1

what is the common action of the medial compartment of the thigh

Answer 1

ADduction of the thigh, at the hip, thus aiding stability of the hip joint

Question 2

name the muscles of the medial compartment, from anterior to posterior

Answer 2

(GP’s Love Bloody Mary’s) or (3 ducks peck grass)
1. gracilis
2. pectineusd
3. aDuctor longus
4. aDductor longus
5. aDductor magnus
(+/- obturator externus, will be feastured in gluteal region)

Question 3

gracilis:
origin
insertion
action
innervation

Answer 3

• origin: body of pubis
• insertion: upper, medial surface of tibia, posterior to sartorius
• action: hip ADduction, knee flexion, medial rotation of the leg
• innervation: obturator L2, L3

Question 4

pectineus
origin
insertion
action
innervation

Answer 4

• origin: pectineal surface of the superior ramus of pubis
• insertion: between lesser trochanter and the linea aspera
• action: aDducts the thigh at the hip
• innervation: femoral nerve, L2, L3, maybe some obturator

Question 5

aDductor longus
origin
insertion
action
innervation

Answer 5

• origin: pubic crest
• insertion: linea aspera, middle 1/3 of femur
• action: aDduction of thigh
• innervation: obturator L2, L3, L4

Question 6

ADductor brevis
origin
insertion
action
innervation

Answer 6

• origin: body and inferior ramus of pubis
• insertion: linea aspera, upper portion of femur
• action: ADduction of thigh
• innervation: obturator, L2, L3, L4

Question 7

Adductor magnus
origin
insertion
action
innervation

Answer 7

• origin: ischiopubic ramus and ischial tuberosity
• insertion: ADductor portion- Posterior femur from gluteal tuberosity to medial supra condylar ridge
  hamstring portion - ADductor tubercle
• action: ADduction of thigh and extension of thigh at hip
• innervation ADD: obturator L3 and L4
  Ham: sciatic, L4 and L5

Question 8

what is the adductor canal
what are the borders

Answer 8

it is a channel that runs from the inferior apex of femoral triangle to the adductor hiatus
the borders are sartorius, aDductor longus and magnus, and vastus medialis and intermedius

Question 9

what is the main nerve supply of the medial compartment of the thigh
(where do they originate)

Answer 9

obturator nerve L2, L3, L4
originate from the ventral branches of the lumbar plexus, splits into anterior and posterior division, sometimes with an accessory obturator
some muscle supply from femoral and sciatic nerve

Question 10

which muscles does the anterior obturator nerve supply

Answer 10

• gracilis
• adductor brevis
• addutor longus
• (sometimes pectineus)

Question 11

which muscles does the posterior obturator nerve supply

Answer 11

• adductor part of adductor magnus
• sometime adductor brevis

Question 12

which muscle of the medial compartment of the thigh does the femoral nerve supply

Answer 12

pectineus

Question 13

which muscle does the sciatic nerve supply in the medial compartment of the thigh

Answer 13

ham string part of aDductor magnus

Question 14

what are the cutaneous (sensory) nerves of the medial compartment of the thigh (3)

Answer 14

1. obturator nerve
2. medial femoral cutaneous nerve (branch of the femoral nerve
3. a little ilioinguinal

Question 15

what are the problems associated with nerve lesions in the medial thigh (3)

Answer 15

• pain, parasthesia
• loss of sensation
• loss of aDduction of the thigh at the hip

Question 16

what arteries supply the medial thigh

Answer 16

1. profunda femoris
2. obturator artery

Question 17

where does the obturator artery start

Answer 17

• from internal iliac artery

(accompanies obturator nerve through obturator canal;
divides into medial and lateral branches that supply the hip joint)

Question 18

what are the veins in the medial thigh

Answer 18

profunda femoris and obturator