neurovascular distribution in plantar foot

Question 1

Dorsomedial side of proximal digit:

Answer 1

deep fibular nerve

Question 2

dorsolateral side of proximal digit

Answer 2

superficial fibular nerve

Question 3

distal dorsum and plantar aspect of digit

Answer 3

medial plantar nerve

Question 4

Anesthesia would block which nerve branches innervating the skin of the second digit?
dorsomedial side :
dorsolateral side:
distal dorsum and plantar aspect of digit:

Answer 4

dm: 1 proper dorsal digital nerve
dl: 1 proper dorsal dig N
distal dorsum and plantar aspect of digit: 2 proper plantar dig nerves

Question 5

What four intrinsic muscles of the foot are innervated by the Medial plantar nerve

Answer 5

LAFF First lumbrical, abductor hallucis, Flexor hallucis brevis, flexor digitorum brevis. All the rest of the intrinsic muslces of the plantar foot are innervated by the lateral plantar nerve

Question 6

What does the medial plantar nerve serve

Answer 6

(L4-S3), larger of two terminal branches, innervates 4 intrinsic muscles, innervates the skin of the sole, medial three toes and medial side of 4th toe, then makes way to dorsom of those same toes.

Question 7

What does the medial plantar nerve course deep to

Answer 7

Abductor hallucis to enter sole

Question 8

What does the medial plantar nerve travel between

Answer 8

the fascial plane between Abductor hallucis and Flexor digitorum brevis

Question 9

What does the medial plantar nerve branch into

Answer 9

Proper plantar digital nerve to the medial side of the hallux and terminates at the MT bases by dividing into 3 common plantar digital nerves, each giving off 2 proper plantar digital nerves

Question 10

What does the lateral plantar nerve serve

Answer 10

(S1-S3) innervates most of the intrinsic plantar muscles, innervates some of the skin on the lateral side, half of the skin on the plantar aspect of the 4th toe and all of the plantar skin of the 5th. Then branches make their way to dorsum of those same 1 1/2 digits

Question 11

The lateral plantar nerve courses deep to what

Answer 11

Abductor hallucis

Question 12

What does the lateral plantar nerve pierce

Answer 12

medial intermuscular septum and lateral intermuscular septum

Question 13

what muscles does the lateral plantar nerve run between

Answer 13

distally and laterally between FDB and QP

Question 14

How does the Lateral plantar nerve divide / branch

Answer 14

(S1-S3) deep branch (hidden by QP) superficial branch that divides into proper plantar digital branch to lateral side of 5th toe and common plantar digital nerve with a communicating branch and 2 proper plantar digital nerves

Question 15

Baxter’s nerve branches from what

Answer 15

first branch of lateral plantar nerve and innervates FDB, QP, and AbDM.

Question 16

What are two primary sites of entrapment for the baxter nerve

Answer 16

1. lateral turn btw QP and thick fascia of AbdH 2. anterior course towards medial process which develop a spur

Question 17

what muscles are innervated by the deep division /branch of the lateral plantar nerve?

Answer 17

adductor hallucis, 1-3 dorsal interossei, 1-2 plantar interossei

Question 18

What muscles are innervated by the superficial branch of the lateral plantar nerve

Answer 18

flexor digiti minimi brevis , 4th dorsal interossei , 3rd plantar interossei

Question 19

What is morton’s neuroma

Answer 19

interdigital nerve entrapment - reported in 3rd common digital branch from medial plantar nerve

Question 20

what is mulder’s test

Answer 20

simultaneous compression of forefoot while applying direct pressure to affected area. right hands squeezes MT heads together, left thumb applies direct pressure at the affected web space where patient feels pain

Question 21

Branches of the posterior tibial artery

Answer 21

nutrient artery to the tibia, fibular artery, communicating branch, posterior medial malleolar artery, medial calcaneal branches

Question 22

ALL of the intrinsic muscles of the plantar foot are supplied by branches of the lateral plantar artery except for 3 which are supplied by the medial plantar artery:

Answer 22

Abductor hallucis, Flexor digitorum brevis, First dorsal interosseous

Question 23

What are the branches of the lateral plantar artery

Answer 23

gives off proper plantar digital artery to the lateral 5th toe, at MT 5 base, curves and becomes the DEEP plantar arch.

Question 24

What branches off of the deep plantar arch

Answer 24

3 posterior perforatings off the arch, 4 plantar metatarsal arteries, 4 anterior perforating off of the metatarsal arteries with 2 proper plantar digital branches each. 1 digital branch or twig ( from 1st plantar MT artery)

Question 25

What does the lateral plantar artery course deep to

Answer 25

abductor hallucis

Question 26

What does the lateral plantar artery run between

Answer 26

FDB and QP

Question 27

What septums does the lateral plantar artery pierce

Answer 27

lateral and medial intermuscular septum

Question 28

What are the branches of the medial plantar artery

Answer 28

at MT1 base provides the proper plantar digital artery which joins the digital branch or twig from the 1st plantar MT A to form: Proper plantar digital artery to the medial side of the hallux Superficial branches join the 1-3rd plantar mt arteries

Question 29

Where do dorsal MT arteries lie

Answer 29

in the intermetatarsal spaces

Question 30

the plantar MT arteries lie where

Answer 30

along midline of MT shaft

Question 31

Where do the posterior dorsal perforating arteries come off

Answer 31

the dorsal MT arteries

Question 32

Where do the posterior plantar perforating arteries come from

Answer 32

the deep plantar arch

Question 33

Where does the digital anastomoses take place

Answer 33

occurs between the dorsal and plantar anterior perforating arteries. Also between dorsal and plantar posterior perforating arteries.

Question 34

The medial plantar nerve lies ______ to the medial plantar artery

Answer 34

lateral

Question 35

The lateral plantar nerve lies__________ to the lateral plantar artery.

Answer 35

medial

Question 36

The artery lies __________ of the same named nerve.

Answer 36

on the outside