ARTERIAL SUPPLY OF THE DORSUM OF THE FOOT

Question 1

how do the arterial supply to the dorsum of the foot lie?

Answer 1

plantar to the muscles and tendon

Question 2

• continuation of the anterior tibial artery, courses dorsally over the medial midfoot (usually the navicular and intermediate cuneiform)
• its pulse can be palpated at this level, intermediate to the extensor hallucis longus and extensor digitorum longus muscle tendons
• it lies deep to the muscle bellies at the transverse crural ligament and passes
  deep to the cruciate crural ligament

Answer 2

Dorsalis Pedis Artery

Question 3

if the anterior tibial artery is absent, the dorsalis pedis artery arises from the?

Answer 3

perforating fibular artery

Question 4

• branch of the dorsalis pedis artery which passes distolaterally, deep to the extensor digitorum brevis and extensor hallucis brevis muscle bellies and supplies them
• anastomoses with the arcuate artery, the lateral plantar artery and the perforating fibular artery / perforating peroneal artery -

supplies tarsal bones, extensor digitorum brevis and extensor hallucis brevis muscles, and deep soft tissue structures

• its pulse can be palpated near the proximomedial edge of the extensor digitorum brevis muscle belly

Answer 4

Lateral Tarsal Artery

Question 5

• usually 2 or 3 small branches - anastomoses with the medial part of the malleolar arterial network and the medial plantar artery
• supplies medial tarsal bones and deep soft tissue structures

Answer 5

Medial Tarsal Artery

Question 6

• a branch of the dorsalis pedis artery near the base of the 2nd metatarsal which
  passes laterally across the bases of the metatarsal bones 2 through 5
• anastomoses with the lateral tarsal artery
• gives rise to 3 dorsal metatarsal arteries

Answer 6

Arcuate Artery

Question 7

• arises between the 2nd and 3rd metatarsal bases and passes distally
  within the 2nd intermetatarsal space (interspace), dorsally
• rests on the belly of the 2nd dorsal interosseous muscle

Answer 7

2nd Dorsal Metatarsal Artery

Question 8

• terminations of the 2nd dorsal metatarsal artery; four supplies the
  lateral side of 2nd toe and five supplies the medial side of the 3rd toe

Answer 8

(Proper) Dorsal Digital Arteries 4 & 5

Question 9

• a branch of the 2nd dorsal metatarsal artery that passes plantarly at the proximal intermetatarsal space
• provides anastomosis between the second dorsal metatarsal artery and the second plantar metatarsal artery

Answer 9

2nd Proximal Perforating Artery

Question 10

• a branch of the second dorsal metatarsal artery which passes plantarly at the distal interspace
• provides anastomosis between the second dorsal metatarsal artery and the second plantar metatarsal artery

Answer 10

Second Distal Perforating Artery

Question 11

• arises between the 3rd and 4th metatarsal bases and passes distally within
  the intermetatarsal space, dorsally
• rests on the belly of the 3rd dorsal interosseous muscle

Answer 11

Third Dorsal Metatarsal Artery

Question 12

• terminations of the 3rd dorsal metatarsal artery; six supplies the lateral side of the 3rd toe and seven supplies the medial side of the 4th toe

Answer 12

(Proper) Dorsal Digital Arteries 6 & 7

Question 13

• a branch of the third dorsal metatarsal artery that passes plantarly at the proximal intermetatarsal space
• provides anastomosis between the third dorsal metatarsal and third plantar metatarsal arteries

Answer 13

3rd proximal Perforating Artery

Question 14

• arises between the 4th and 5th metatarsal bases and passes distally within
  the intermetatarsal space, dorsally
• rests on the belly of the 4th dorsal interosseous muscle

Answer 14

Fourth Dorsal Metatarsal Artery

Question 15

• terminations of the 4th dorsal metatarsal artery; eight supplies the lateral side of the 4th toe and nine supplies the medial side of the 5th toe

Answer 15

(Proper) Dorsal Digital Arteries 8 & 9

Question 16

• a branch of the 4th dorsal metatarsal artery that passes plantarly at the 4th proximal intermetatarsal space
• provides anastomosis between the 4th dorsal metatarsal artery and the
  4th plantar metatarsal artery

Answer 16

Fourth Proximal Perforating Artery

Question 17

• a branch of the 4th dorsal metatarsal artery that passes plantarly at the distal intermetatarsal space
• provides anastomosis between the 4th dorsal metatarsal artery and the
  4th plantar metatarsal artery

Answer 17

Fourth Distal Perforating Artery

Question 18

• branch of the 4th dorsal metatarsal artery, courses dorsally over the 5th metatarsal and supplies the dorsolateral side of the 5th toe
• may be a branch of the arcuate artery

Answer 18

(Proper) Dorsal Digital Artery 10

Question 19

• terminal branch of the dorsalis pedis artery
• passes distally within the 1st interspace, dorsally
• rests on the dorsal surface of the 1st dorsal interosseous muscle

Answer 19

First Dorsal Metatarsal Artery

Question 20

• terminations of the 1st dorsal metatarsal artery

- two supplies the lateral side of the hallux and three supplies the medial side of the 2nd toe

Answer 20

(Proper) Dorsal Digital Arteries 2 & 3

Question 21

• branch of first dorsal metatarsal artery, courses dorsally over the first metatarsal and supplies the medial side of the hallux

Answer 21

(Proper) Dorsal Digital Artery 1

Question 22

• branch of the 1st dorsal metatarsal artery that arises at the distal end of the 1st interspace and passes plantarly
• provides anastomosis between the 1st dorsal and plantar metatarsal arteries

Answer 22

First Distal Perforating Artery

Question 23

• passes into the lateral aspect of the metatarsal shaft near the center
• occasionally it enters near the distal metaphysis

Answer 23

Nutrient Artery to the First Metatarsal

Question 24

• terminal branch of the dorsalis pedis artery

- arises at the proximal end of the 1st interspace and passes plantarly to anastomose with the plantar arterial arch

Answer 24

Deep Plantar Artery / 1st Proximal Perforating Artery