Foot Flashcards Preview

SHB Exam 2 > Foot > Flashcards

Flashcards in Foot Deck (54)
Loading flashcards...
1

What bones does the talus articular w/?

- Head articulates w/navicular
- Body articulates w/tibia and fibula, calcaneus

2

What bones does the calcaneus articulate w/anteriorly? Superiorly?

- Cuboid
- Talus

3

What bone sits medial to the cuboid?

Lateral cuneiform

4

What bone is the sustentaculum tali part of?
What tendon runs through it?

- Calcaneus
- Flexor hallucis longus tendon

5

Which tendon does the cuboid have a groove for?

Fibularis longus tendon

6

What bone is the styloid tuberosity a part of?
What tendon runs thru it?

- 5th metatarsal
- Fibularis longus tendon

7

If you jump and land on your heal, which bone would be most likely to fx?

Calcaneus

8

What skin area does the medial plantar (tibial) n. innervate?

Medial sole, tips of 1st 3.5 toes
(more skin, fewer mm.)

9

What skin area does the lateral plantar (tibial) n. innervate?

Lateral sole, tips of last 1.5 toes
(more mm., less skin)

10

What skin area does the superficial fibular n. innervate?

Dorsum of the foot, lower lateral shin

11

What skin area does the deep fibular n. innervate?

Tiny area b/w 1st and 2nd toes

12

What dermatome covers the knee, medial foot, and big toe?

L4

13

What dermatome covers the anterolateral leg and most of the dorsum of the foot, all the way to the calcaneal area?

L5

14

What dermatome covers the lateral posterior of thigh + leg, + lateral edge of foot?

S1

15

What dermatome covers the medial posterior of thigh + leg?

S2

16

What n. innervates the LAFF mm? (What does this n. branch from?)
What are the LAFF mm?

Medial plantar n. (branch from tibial n.)
- Lumbrical (1st) m.
- Abductor hallucis m.
- Flexor digitorum brevis m.
- Flexor hallucis brevis m.

17

What n. innervates the dorsal mm. of the foot? (what does this n. branch from?)
What are these mm?

Deep fibular n. (branch from common fibular n.)
- Extensor digitorum brevis m.
- Extensor hallucis brevis m.

18

What n. innervates all mm. of the foot besides the LAFF mm. and the dorsal mm?

Lateral plantar n. (branch from tibial n.)

19

What is the plantar aponeurosis?

Thickened deep fascia of the sole, extending from the calcaneal tuberosity to end in 5 slips over the heads of the metatarsals, and into the flexor tendon sheaths.

20

Explain the plantar reflex.

If you press on bottom of foot in the posterior, move along lateral edge, and cross medially at the front, you're mimicking the feelings of slipping, causing the big toe to flex in a reflex to stabilize the body.

21

What is Babinski's sign?

Normal in infants; when eliciting the plantar reflex the hallux extends and toes abduct
- Disappears at 12-24 months

22

What is in the 1st layer of the foot?

AFA
- Abductor hallucis m.
- Flexor digitorum brevis m.
- Abductor digiti minimi m.

23

What is in the 2nd layer of the foot?

2M + 2T
- Quadratus plantae m.
- Lumbricals
- Tendon of flexor digitorum longus
- Tendon of flexor hallucis longus

24

What is in the 3rd layer of the foot?

FAF
- Flexor hallucis brevis m.
- Adductor hallucis m.
- Flexor digiti minimi brevis m.

25

What is in the 4th layer of the foot

2M + 2T
- 3 plantar interossei mm. (PADS)
- 4 dorsal interossei mm. (DABS)
- Tendon of fibularis longus
- Tendon of tibialis posterior

26

Abductor hallucis m: OIIA?

O: Calcaneus & flexor retinaculum
I: Medial aspect of base of proximal phalanx of big toe via medial sesamoid

I: Medial plantar n.
A: Flexes and abducts big toe. Supports medial longitudinal arch

27

Flexor digitorum brevis m: OIIA?

O: Calcaneus
I: Four tendons to four lateral toes to borders of middle phalanx (tendons of flexor digitorum longus pass through them).

I: Medial plantar n.
A: Flexes lateral four toes. Supports medial and lateral longitudinal arches

28

Abductor digiti minimi m: OIIA?

O: Calcaneus
I: Lateral side of base of proximal phalanx of 5th toe and 5th metatarsal

I: Lateral plantar n.
A: Flexes and abducts 5th toe. Supports lateral longitudinal arch

29

Quadratus plantae m: OIIA?

O: Calcaneus
I: Lateral border long flexor *tendons

I: Lateral plantar n.
A: Flexes toes

30

Lumbrical mm: OIIA?

O: Lateral 3: bipennate origin from cleft between the four tendons of flexor digitorum longus. Medial 1: unipennate origin from medial aspect of 1st tendon
I: Dorsal extensor expansion

I: Medial 1 by medial plantar n., lateral 3 by lateral plantar n.
A: Extend toes at interphalangeal joints and flex metatarsal phalangeal joints