The plantar arch is formed from:

• deep plantar artery
  Deep plantar artery
  The deep plantar artery descends into the sole of the foot, between the two heads of the first Interosseous dorsalis, and unites with the termination of the lateral plantar artery, to complete the plantar arch.It sends a branch along the medial side of the great toe and continues forward along the...
  
  , from the dorsalis pedis - aka dorsal artery of the foot
• lateral plantar artery
  Lateral plantar artery
  The lateral plantar artery , much larger than the medial, passes obliquely lateralward and forward to the base of the fifth metatarsal bone....
  
  

The plantar arch supplies the underside, or sole, of the foot.

The plantar arch runs from the 5th metatarsal and extends medially to the 1st metatarsal (of the big toe).

The arch is formed when the lateral plantar artery

Lateral plantar artery

The lateral plantar artery , much larger than the medial, passes obliquely lateralward and forward to the base of the fifth metatarsal bone....

 turns medially to the interval between the bases of the first and second metatarsal bones, where it unites with the deep plantar branch of the dorsalis pedis artery

Dorsalis pedis artery

In human anatomy, the dorsalis pedis artery , is a blood vessel of the lower limb that carries oxygenated blood from the dorsal surface of the foot. It arises at the anterior aspect of the ankle joint and is a continuation of the anterior tibial artery...

, thus completing the plantar arch (or deep plantar arch).

External links

• http://www.dartmouth.edu/~humananatomy/figures/chapter_17/17-3.HTM