Lateral Plantar Artery Flashcards

Study the lateral plantar artery's origin, course, muscular relations, superficial and deep branches, plantar arch, and clinical anatomy.

Card 1 of 25Question

What is the lateral plantar artery?

The larger terminal branch of the posterior tibial artery that supplies the lateral sole and contributes to the deep plantar arch.

In This Section

1. What is the lateral plantar artery?

The larger terminal branch of the posterior tibial artery that supplies the lateral sole and contributes to the deep plantar arch.

2. From which artery does the lateral plantar artery arise?

The posterior tibial artery.

3. Where does the lateral plantar artery originate?

Deep to the abductor hallucis muscle near the medial side of the heel.

4. What are the two main portions of the lateral plantar artery?

An oblique proximal portion and a transverse distal portion.

5. What is the course of the proximal lateral plantar artery?

It passes obliquely anterolaterally across the sole toward the base of the fifth metatarsal.

6. Between which muscles does the proximal lateral plantar artery pass?

Between flexor digitorum brevis superficially and quadratus plantae deeply.

7. Which nerve accompanies the lateral plantar artery through the sole?

The lateral plantar nerve, a terminal branch of the tibial nerve.

8. Where does the lateral plantar artery turn medially?

Near the base of the fifth metatarsal, where it continues toward the deep plantar arch.

9. What is the principal contribution of the lateral plantar artery to the plantar circulation?

It forms most of the deep plantar arterial arch.

10. Which artery typically completes the deep plantar arch?

The deep plantar branch of the dorsalis pedis artery.

11. In which direction does the deep plantar arch curve across the sole?

Medially, from the lateral side of the foot toward the first intermetatarsal space.

12. Between which muscular layers is the deep plantar arterial arch located?

Between the oblique head of adductor hallucis and the interosseous muscles.

13. What are the principal branches of the lateral plantar artery?

Muscular, cutaneous, superficial, and deep branches, including branches forming the plantar arterial arch.

14. What is the main distribution of the superficial branch of the lateral plantar artery?

The lateral plantar region, including muscles and skin near the fifth toe.

15. What is the continuation of the deep branch of the lateral plantar artery?

The deep plantar arterial arch.

16. How many plantar metatarsal arteries typically arise from the deep plantar arch?

Four plantar metatarsal arteries.

17. What is the general course of the plantar metatarsal arteries?

They pass distally through the intermetatarsal spaces toward the toes.

18. What branches do the plantar metatarsal arteries form near the toes?

Common plantar digital arteries that divide into proper plantar digital arteries.

19. How does the deep plantar arch communicate with the dorsal arterial circulation?

Through perforating branches connecting the plantar and dorsal metatarsal arteries.

20. Which muscles receive arterial branches from the lateral plantar artery?

Abductor digiti minimi, flexor digitorum brevis, quadratus plantae, and other intrinsic plantar muscles.

21. Which muscle is closely related to the deep plantar arch on its superficial side?

The oblique head of adductor hallucis.

22. Which region of the foot receives a substantial blood supply from the lateral plantar artery?

The lateral sole and the deeper plantar structures of the forefoot.

23. How does the lateral plantar artery differ from the medial plantar artery in size?

The lateral plantar artery is usually larger.

24. What is the clinical importance of the deep plantar arch?

It provides an arterial connection between the posterior tibial and dorsalis pedis circulations.

25. Why is the lateral plantar artery important during plantar foot surgery?

Its deep course and arterial arch must be preserved to reduce the risk of hemorrhage and plantar tissue ischemia.