ARTERIAL SUPPLY OF THE DORSUM OF THE FOOT Flashcards
1
Q
how do the arterial supply to the dorsum of the foot lie?
A
plantar to the muscles and tendon
2
Q
- 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
A
Dorsalis Pedis Artery
3
Q
if the anterior tibial artery is absent, the dorsalis pedis artery arises from the?
A
perforating fibular artery
4
Q
- 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
A
Lateral Tarsal Artery
5
Q
- 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
A
Medial Tarsal Artery
6
Q
- 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
A
Arcuate Artery
7
Q
- 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
A
2nd Dorsal Metatarsal Artery
8
Q
- 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
A
(Proper) Dorsal Digital Arteries 4 & 5
9
Q
- 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
A
2nd Proximal Perforating Artery
10
Q
- 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
A
Second Distal Perforating Artery
11
Q
- 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
A
Third Dorsal Metatarsal Artery
12
Q
- 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
A
(Proper) Dorsal Digital Arteries 6 & 7
13
Q
- 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
A
3rd proximal Perforating Artery
14
Q
- 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
A
Fourth Dorsal Metatarsal Artery
15
Q
- 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
A
(Proper) Dorsal Digital Arteries 8 & 9
