lumbar plexus nerves

Question 1

motor supply of iliohypogastric nerve

Answer 1

internal oblique and transverse abdominis

Question 2

cutaneous supply of iliohypogastric nerve

Answer 2

skin covering proximal lateral aspect of buttocks

Question 3

iliohypogastric nerve is anterior or posterior division?

Answer 3

anterior division of the spinal nerves

Question 4

cutaneous supply of ilioinguinal nerve

Answer 4

proximal medial aspect of thigh

Question 5

where does the ilioinguinal nerve come off of?

Answer 5

anterior division of L1

Question 6

which nerve enters the thigh by passing beneath the inguinal ligament just medial to the ASIS

Answer 6

lateral femoral cutaneous nerve of the thigh

Question 7

where does the lateral femoral cutaneous nerve come off of? anterior or posterior

Answer 7

posterior division of the spinal nerves

Question 8

cutaneous supply of lateral femoral cutaneous nerve

Answer 8

lateral aspect of the thigh (both anterior and posterior)

Question 9

compression neuropathy of the lateral femoral cutaneous nerve as it leaves the pelvic cavity is called?

Answer 9

meralgia paresthesia

Question 10

symptoms of meralgia paresthesia include?

Answer 10

pain, burning and tingling along lateral aspect of thigh

Question 11

meralgia paresthesia is often confused with what?

Answer 11

hip disorders like trochanteric bursitis

Question 12

which nerve pierces the psoas major muscle and runs inferiorly on the anterior aspect of the muscle? also divides into 2 branches

Answer 12

genitofemoral nerve- has a femoral and genital branch

Question 13

motor supply of genitofemoral nerve

Answer 13

cremaster muscle

Question 14

cutaneous supply of genitofemoral nerve

Answer 14

genitalia and small area below inguinal ligament

Question 15

the genitofemoral nerve is anterior or posterior division?

Answer 15

the anterior division of spinal nerves

Question 16

the femoral nerve is anterior or posterior division?

Answer 16

the posterior division of spinal nerves

Question 17

motor supply of femoral nerve

Answer 17

iliacus, psoas major, sartorius, quadriceps, pectineus

Question 18

cutaneous supply of femoral nerve

Answer 18

medial and intermediate aspect of anterior thigh and medial leg and foot

Question 19

the femoral nerve gives off articular branches to supply what?

Answer 19

hip and knee joints

Question 20

what is the name of the cutaneous branch off the femoral nerve which supplies the medial leg and foot?

Answer 20

saphenous nerve

Question 21

motor damage to the femoral nerve causes:

Answer 21

leg can’t be extended and flexion at hip is diminished (iliopsoas)

Question 22

sensory damage to the femoral nerve causes:

Answer 22

medial and intermediate anterior aspect of the thigh and medial leg and foot

Question 23

compression of the saphenous nerve may occur where?

Answer 23

within the adductor canal or where it exits the fascia to supply the medial leg

Question 24

entrapment neuropathy of the saphenous nerve can cause what?

Answer 24

knee pain and paresthesia along the distribution of the nerve

Question 25

the obturator nerve is anterior or posterior?

Answer 25

anterior division of spinal nerve

Question 26

motor supply of obturator nerve

Answer 26

pectineus, adductor magnus, adductor longus and brevis, gracilis and obturator externus

Question 27

cutaneous supply of obturator nerve

Answer 27

skin on the medial aspect of thigh

Question 28

articular supply of obturator nerve

Answer 28

hip and knee joints

Question 29

the accessory obturator nerve is found in what percentage of the population?

Answer 29

20%, when found is just lateral to obturator

Question 30

accessory obturator nerve supplies what when present?

Answer 30

pectineus muscle and hip joint

Question 31

damage to the obturator nerve happens when?

Answer 31

during a difficult childbirth or anterior dislocation of the hip

Question 32

how do you test for damage to the obturator nerve?

Answer 32

adduction of the femur against resistance