Lower limb

Question 1

What are the spinal levels for the sciatic nerve

Answer 1

L4-S3

Question 2

What is the largest nerve in the body

Answer 2

Scaitic nerve

Question 3

What does the sciatic nerve innervate

Answer 3

Posterior thigh, all the leg and foot

NB supplies nothing in the gluteal region

Question 4

What are the branches of the sciatic nerve

Answer 4

tibial

common fibular

Question 5

Spinal levels of pudendal nerve

Answer 5

S2-4

Question 6

what is the function of the superficial muscle group in the gluteal region

Answer 6

Extensors, abductors and medial rotators of hip

Question 7

list muscles of superficial gluteal region

Answer 7

gluteus: maximus, medius, minimus and tensor fascia lata

Question 8

function of deep gluteal muscles

Answer 8

lateral rotators of thigh and hip stabilisers

Question 9

list muscles of deep gluteal region

Answer 9

piriformis, sup+inf gemelli, obturator internus, quadratus femoris

Question 10

what is innervated by the inferior gluteal nerve

Answer 10

gluteus maximus

Question 11

what is innervated by the superior gluteal nerve

Answer 11

gluteus medius, minimus + tensor fascia lata

Question 12

What happens in Trendelenberg gait

Answer 12

the superior gluteal nerve is impaired resulting in poor function of the gluteus medius and minimus and a hip drop on the contralateral side

Question 13

spinal levels of femoral nerve

Answer 13

L2-4

Question 14

what are the borders of the femoral triangle

Answer 14

lateral = sartorius 
medial = adductor longus
superiorly = inguinal ligament

Question 15

contents of femoral triangle

Answer 15

NAVY - lateral to medial 
femoral nerve
femoral artery 
femoral vein 
lYmphatics (deep inguinal)

Question 16

innervation of anterior thigh

Answer 16

femoral nerve

Question 17

innervation of medial thigh

Answer 17

obturator nerve

Question 18

innervation of posterior thigh

Answer 18

tibial division of sciatic - semiT, semiM and long head of biceps femoris
Short head of biceps femoris = common fibular division of sciatic

Question 19

what is the saphenous nerve a branch of

Answer 19

femoral nerve

saphenous nerve travels along the great saphenous vein

Question 20

which muscle does the sciatic nerve emerge from

Answer 20

inferior to the piriformis

Question 21

in the posterior view what are the borders of the popliteal fossa

Answer 21

lateral = biceps femoris 
medial = semiT + M
inferiorly = medial and lateral heads of the gastrocnemius

Question 22

what is the sural nerve

Answer 22

comes from the tibial and common fibular branches of the sciatic to supply skin of posterolateral leg and lateral foot
It descends with the small saphenous vein

Question 23

what is foot drop

Answer 23

palsy of the common fibular nerve