Muscles of Leg and Feet

Question 1

FDL

Answer 1

O: Tibia - Post Mid 1/3

I: Toes 2-5 Plantar surface, Distal Phalanges

A: FLEX of toes 2-5 at MTP and IP; Plantarflexion, Inversion

N: Tibial n

S: Post Tibial artery

Question 2

FHL

Answer 2

O: Fibula - Post Distal 2/3 + Interosseous membrane Distal 2/3

I: Big toe Plantar surface, Distal Phalanx

A: FLEX of toe 1 at MTP and IP; Plantarflexion, Inversion

N: Tibial n

S: Post Tibial artery

Question 3

POPLITEUS

Answer 3

O: Distal Femur Post-Lat Condyle

I: Tibia – Superior portion posteromedial.

A: Unlocks the knee-FLX, Medial rotation of tibia

N: Tibial n

S: Post Tibial artery

Question 4

EDL

Answer 4

O: Fibula - Prox 2/3 + Interosseous membrane Prox 1/3 + Tibia - Lat condyle

I: Toes 2-5 dorsal surface, Mid and distal Phalanges

A: EXT of toes 2-5 at MTP and IP; Dorsiflexion

N: Deep Fibular n

S: Ant Tibial artery

Question 5

EHL

Answer 5

O: Fibula - Ant middle 1/3 + Interosseous membrane Middle 1/3

I: Big toe dorsal surface, Distal Phalanx

A: EXT of toe at MTP and IP; Dorsiflexion

N: Deep Fibular n

S: Ant. Tib.

Question 6

EDB

Answer 6

O: Calcaneus - Dorsal surface

I: Toes 2-4: Lat side of EDL distal tendons

A: EXT of toes 2-4 at MTP and PIP, DIP

N: Deep Fibular n

S: Dorsalis Pedis artery

Question 7

EHB

Answer 7

O: Calcaneus - Dorsal surface

I: Big toe - dorsal surface, base of prox phalanx

A: EXT of Big toe at MTP

• N: Deep Fibular n.

S: Dorsalis Pedis A.

Question 8

Layers of Plantar Intrinsic Foot Muscles and Muscles per Layer

Answer 8

3-2-3-2

1st: AH, ADMP, FDB
2nd: QP, Lumbricals (Pedis)
3rd: FHB, FDMP, AddH
4th: Plantar!Int (3 unipen), DI Pedis! (Bipennate 4)

Question 9

AbdH

Answer 9

O: Calcaneus - tub + Plantar Fascia + Flex retinaculum

I: Big toe - Prox Phalanx - med plantar side

A : ABD of Big toe; FLEX at MTP

N: Medial Plantar

S: Medial plantar A.

Question 10

ADMP

Answer 10

O: Calcaneus - tub + Plantar Fascia

I: Toe 5 - Lat plantar base of Prox phalanx

• A: ABD of Toe 5

N: Lat Plant

S: Lat Plant A.

Question 11

FDB

Answer 11

O: Calcaneus - tub + Plantar Fascia

I: Mid Phalanges - med + lat aspects

A: flexion of toes 2-5 at MTP and PIP

N: Med Plant

S: Med + Lat Plant A.

Question 12

QP

Answer 12

O: Calcaneus - med and Lat sides

I: FDL - Distal tendon

A: flexion of Toes 2-5 at MTP, PIP, DIP

N: Lat Plantar N

S: Med + Lat Plant A.

Question 13

Lumbricals Pedis

Answer 13

O: Flex Dig Longus - Distal tendon

1. Med border of Toe 2!!
2. Adj sides of toe 2-3
3. Adj side of toe 3-4
4. Adj sides of toe 4-5

I: Ext Dig Longus - med side + dorsal dig expansion of toes 2-5

A: flexion of toes 2-5 at MTP + Ext of toes 2-5 at PIP, DIP

N: Medial and Lat plantar nerves

S: Medial and Lateral plantar A.

Question 14

FHB

Answer 14

O: Cuboid + 3rd Cuneiform

I: Big toe - Prox phalanx: plantar surface, medial and Lat sides

A: FLX of Big toe @ MTP

N: Med. Plant

S: Med. Plant A.

Question 15

FDMP

Answer 15

O: 5th metatarsal: plantar surface, base + Fibularis Longus: distal tendon

I: 5th toe: plantar surface, prox phalanx

A: Flexion of the 5th toe at MTP

N: Lat. Plant

S: Lat Plant A.

Question 16

AH

Answer 16

O: Oblique head - Base of metatarsals 2-4 + Fib Longus (distal tendon)
Transverse head - Plantar MTP ligaments

• I: Big toe - Prox phalanx: Lat base
• A: ADD of the big toe at MTP

N: Lat Plant N.

S: Branch of Plantar Arch

Question 17

PLANTAR1! INTEROSSEI +shape

Answer 17

Unipennate, 3

O: Metatarsals 3-5: Med sides (2nd Toe side)
1. Metatarsal 3
2. Metatarsal 4
3. Metatarsal 5
• I: Prox phalanges of Toes 3-5, Med side (2nd toe side) + Dorsal Dig Exp
1. Toe 3
2. Toe 4
3. Toe 5

• A: ADD of Toes 3-5 at MTP; Flexion at MTP; Ext at PIP and DIP

N: Lat Plantar

S: Branch of Plantar A.

Question 18

. DORSAL INTEROSSEI PEDIS

Answer 18

O: Adj sides of 2 Metatarsals

1. Metatarsals 1 and 2
2. Metatarsals 2 and 3
3. Metatarsals 3 and 4
4. Metatarsals 4 and 5

• I: Base of the Prox phalanges of Toes 2-4 (sides away from the center 2nd toe) + Dorsal
Dig Exp
1. Medial side of Toe 2
2. Lateral side of Toe 2
3. Lateral side of Toe 3
4. Lateral side of Toe 4

• A: ABD of Toes 2-4 at MTP; Flexion at MTP 2-4; Ext at PIP and DIP 2-4
• N: Lateral plantar

S: Branch of Plantar A.