Foot

Structures of the foot comprise a highly integrated group of 26 bones, with numerous muscles, tendons, and ligaments holding the bony structures together in proper alignment and providing support for balance and movement.

Beneath the ankle joint are additional tarsal bones, which form the lower portion of the heel and its connection to the metatarsal bones of the foot. The Achilles' tendon joins the heel to the muscles of the calf.

The metatarsal bones form a portion of the arch, or instep, of the foot and connect to the phalanges, or toe bones, at the "ball" of the foot. A broad sheath of tendons called the plantar fascia supports and cushions the foot and heel. A thick layer of fatty tissue between the skin and the underside of the foot and ankle provides additional cushioning from the stresses of weight bearing and joint movement.