Wk3- Nerve Anatomy

Question 1

Why is anatomy important

Answer 1

1. Avoid neurovascular structures
2. Need to know which nerves to block and where to

Question 2

Sciatic nerve branches off into and where

Answer 2

Tibial nerve and common fibular nerve
At popliteal fossa

Question 3

Sciatic nerve muscular branches go to

Answer 3

Biceps, semimembranosus, semitendinosus, part of adductor Magnus

Question 4

What nerve roots make up tibial nerve

Answer 4

L4, l5, s1, s2, s3

Question 5

What branches off the tibial nerve

Answer 5

Sural

Question 6

What branches off tibial nerve

Answer 6

Sural

Question 7

What branches off tibial nerve

Answer 7

Sural, medial calc, medial and lateral plantar nerves

Question 8

What muscles does the tibial nerve innervate

Answer 8

Gastroc, soleus, plantaris, tib post, popliteus, flexor digital longus, flexor hallucis Longus

Question 9

Medial plantar nerve innervates what muscles in the foot

Answer 9

abductor hallucis, flexor digital Brevis, flexor hallucis brevis, 1st lumbrical

Question 10

Lateral plantar nerve innervates what muscles in the foot

Answer 10

Abductor digiti mini
Quadratus plantar
2,3,4 lumbricals
Adductor hallucis
Flexor digiti minimi brevis
Dorsal and plantar interossei

Question 11

what branches off medial plantar nerve

Answer 11

medial proper plantar digital nerve (blocked during a hallux block),

4 common plantar digital nerves

Question 12

lateral plantar nerves branches off into

Answer 12

superficial branch divides into medial and lateral branches

medial- communicates with the medial plantar nerve and supplies the skin overthe 4th interdigital cleft

lateral- goes to 3rd/4th interossei and skin on lateral of 5th toe

deep branch- 2/3/4/ lumbricals, 1st/2nd plantr interossei, adductor hallucis

Question 13

nerve root that makes up common peroneal nerve

Answer 13

l4, l5, s1, s2

Question 14

what branches off common peroneal

Answer 14

lateral sural cutaneous nerve
sural communicating nerve
deep and superficial peroneal nerves that divides just below head of fibular

Question 15

what does common peroneal innervate

Answer 15

short head of biceps femoris

Question 16

superficial peroneal nerve innervates muscles/cutaneous

Answer 16

peroneal longus/brevis muscles

cutaneous of lower 1/3 of leg and dorsum of foot

Question 17

superficial peroneal branches into

Answer 17

above the ankle it divides into medial and lateral dorsal cutaneous nerves

Question 18

medial/lateral dorsal cutaneous nerves branch off how

Answer 18

medial - divides into two dorsal digital nerves, one going to the medial side of 1st toe, the other branching off to the 2nd/3rd toe to make proper digital nerves

lateral- divides into 2 common dorsal digital nerves for the 3rd and 4th toes and 4th and 5th toe

Question 19

how many layers of muscles plantarly

Answer 19

4

Question 20

1st layer of plantar muscles

Answer 20

1. abductor hallucis
2. flexordigitorum brevis
3. abductor digiti minimi

Question 21

2nd layer of plantar muscles

Answer 21

1. quadratus plantae
2. lumbricals
3. flexor digitorum longus tendon
4. flexor hallucis longus tendon

Question 22

3rd layer

Answer 22

1. flexor hallucis brevis
2. adductor hallucis
3. flexor digiti minimi brevis

Question 23

4th layer

Answer 23

1. tib post tendon
2. peroneus longus tendon
3. 3 plantar interossei
4. 4 dorsal interossei

Question 24

what muscles are in the medial compartment of sole

Answer 24

abductor hallucis
flexor hallucis brevis

Question 25

what muscles are in the central of sole

Answer 25

quadratus plantae
adductor hallucis
post tib neurovasuclar bundle

Question 26

what muscles are in the lateral compartment of sole

Answer 26

abductor digiti minimi
flexor digiti minimi brevis

Question 27

injection systems

Answer 27

1. needle free
2. needle
3. computer assisted anaesthesia

Question 28

what is needle free injection

Answer 28

high pressure, narrow jet of anaesthetic powered by air/gas cylinder/spring

Question 29

what can u use needle free injection for

Answer 29

-post tib block
-verruca removal
-nail surgery
-removal of neurovascular corns

Question 30

types of needle free injections

Answer 30

-MadaJet
-DermoJet
-Bioject

Question 31

pros of needleless

Answer 31

reduces pt concerns
fast
consistent dosage
reduce injuries

Question 32

what nerves are blocked in a mayo block

Answer 32

medial dorsal cutaneous
deep peroneal nerve

Question 33

what nerves are blocked for a digital block

Answer 33

dorsal digital proper nerves
plantar digital proper nerves

Question 34

what nerves are blocked in a plantar filtration

Answer 34

depends on location

tibial
sural
saphenous
medial plantar
lateral plantar

Question 35

opening surgery pack

Answer 35

check sterilization indicator
open first fold away from yourself
open side folds
open lower fold towards self

if you touch any parts then need to start over with new one

Question 36

causes of painful scar

Answer 36

-stump neuroma
-entrapment
-neuropraxis

Question 37

complications of bone healing

Answer 37

hypertrophic scar
keloid scar
dehiscence
haemtoma
infection
painful scar
DVT
complex regional pain syndrome

delayed healing/non union

Question 38

reasons for triple arthrodesis

Answer 38

end stage flatfoot
tarsal coalition
cavus foot
recalcitrant clubfoot
neuromuscular disorder
post traumatic arthritis

Question 39

triple arthrodesis fuses what joints

Answer 39

STJ (talus and calc)
talonavicular
calcneocuboid joints

Question 40

what is pantalar arthrodesis

Answer 40

fusion of tibitalar and
STJ
talonavicular
calcaneocuboid joints

Question 41

isolated arthrodesis

Answer 41

fusion of one of the main 3 joints