Plantar Foot Flashcards Preview

MSS - MSK Exam 3 > Plantar Foot > Flashcards

Flashcards in Plantar Foot Deck (69)
Loading flashcards...
1

plantar fascia

tough connective tissue layer of deep fascia continuous wit that of dorsum of foot attached laterally and medially to 5th and 1st metatarsal respectively

2

plantar aponeurosis?

thickened central portion of plantar fascia

3

superficial layer of plantar aponeurosis

longitudinally oriented fibers attaching proximally to tuberosity of calcaneous

distally provide slips which fuse with and reinforce fibrous digital sheaths

4

deep layer of plantar aponeurosis

transversely oriented fibers attached to heads of metactarsals forming superficial transverse metatarsal ligament

5

transverse fasciculi

transverse oriented bundles of deep fascia which reinforce webs of toes

6

fibrous digital sheaths

specializations of deep fascia
anchored to phalanges
form fibro-osseous canal that prevents bowstring of flexor tendons

7

synovial digital sheath

line the fibrous digital sheaths to lubricate them

8

intermuscular septa in plantar foot?

lateral and medial
extend from lateral and medial edges of plantar aponeurosis to attach to 1st and 5th metatarsal

delineate two compartments

9

two compartments of plantar foot?

medial compartment - great toe
lateral compartment - 5th toe

10

contents of medial compartment?

flexor and abductor for great toe
tendon of flexor hallucis longus and medial plantar vessel and nerves

11

contents of lateral compartment?

contains abductor and flexor muscle of digiti minimi

12

central compartment?

deep to plantar aponeurosis and contains flexor digitorum brevis, lumbricals, quadratus plantae, adductor hallucis longus, tendons of flexor digitorum longus, lateral plantar vessels and nerves

13

interosseous compartment

defined as existing between layers of plantar and dorsal interosseous fascia and contains the interosseous muscles

14

layers of muscle in foot?

four
3-2-3-2

15

plane of reference in foot?

2nd toe!

16

muscles of first layer

abductor hallucis
abductor digiti minimi
flexor digitorum brevis

17

attachments of abductor hallucis?

origin:
calcaneus

insertion:
medial side of base of proximal phalanx of great toe

18

action of abductor hallucis

abducts great toe

19

innervation of abductor hallucis

medial plantar nerve

20

attachment of abductor digiti minimi

origin:
calcaneus

insertion:
lateral side of base of proximal phalanx of fifth digit

21

action of abductor digiti minimi

abducts 5th digit

22

innervation of abductor digiti minimi?

lateral plantar nerve

23

attachments of flexor digitorum brevis

origin:
calcaneus

insertion:
middle phalanges of four small toes

24

actions of flexor digitorum brevis?

flexes middle and proximal phalanges of four small toes

25

innervation of flexor digitorum brevis

medial plantar nerve

26

tendons of flexor digitorum brevis?

bifurcate!

allows passage of tendons from flexor digitorum longus to reach distal phalanges

27

posterior tibial artery and nerve?

divide to lateral and medial plantar branches

deep to proximal abductor hallucis and pass forward between muscles of 1st and 2nd layers

28

muscles of second layer?

quadratus plantae
lumbricals

29

what tendons pass through second layer?

flexor hallucis longus and flexor digitorum longus

30

attachments of quadratus plantae

origin:
calcaneus

insertion:
tendon of flexor digitorum longus