Bones of the foot

Foot bone anatomyCredit:

The foot bone anatomy consists of a total of twenty-two small and medium sized bones of all these only some of them have active movement. The foot bone anatomy is important in the human skeletal system because they support the other bones of the body when standing and moving. These bones also provide points of attachment for the muscles of the feet. Foot bone anatomy has several bones divided into three groups:

  • Tarsal bones
  • Metatarsal bones
  • Phalanges (or digits of the foot)
Lateral cuneiform - anatomy of the bone of the foot(85454)Credit:

Tarsal Bones

The tarsal bones make up a very important group of the foot bone anatomy and are made up of six bones. These bones include the lateral cuneiform, intermediate cuneiform, medial cuneiform, navicular bone, cuboid bone, talus, calcaneus or heel bone. Only one bone articulates with the tibia and fibula superiorly. This bone is the talus; the other bones except calcaneus articulate with the metatarsals anteriorly. The calcaneus is the biggest bone of the foot anatomy. The tarsal bones (when together) form the arch of the foot. All of the tarsal bones together make up the tarsus which the joint formed by them, the tibia and fibula is commonly known as the ankle. It is important to know the structure of the calcaneus because it is the bone which is usually fractured when a person falls from a height and lands on his feet.

Talus - anatomy foot boneCredit: bone - anatomy of foot boneCredit: cuneiform - anatomy foot boneCredit: First metatarsal bone - anatomy of the foot boneCredit:

The Metatarsal Bones

This group of foot bone anatomy consists of five long bones. They do not have specific names like the tarsal bones but they are numbered from one side to another. The numbering is from the medial side; the first one being the big toe. They function is to connect the bones in the anterior (the phalanges) and the bones posterior to them (the tarsal bones). They are like the metacarpals in the hand. The 1st bone in this group (big toe) articulates with medial cuneiform bone and also slightly with the intermediate cuneiform bone. The 2nd metatarsal bone articulates with the lateral, intermediate and lateral cuneiform bones. The 3rd metatarsal bone articulates with the lateral cuneiform bone. The 4th metatarsal bone articulates with the lateral cuneiform bone and also the cuboid bone (one of the tarsal bones). The 5th articulates with only the cuboid bone.

Fourth metatarsal bone - foot bone anatomyCredit: metatarsal bone - foot bone anatomyCredit:

The Phalanges

Proximal phalanges - foot bone anatomyCredit:

These are commonly called the toe bones. There are five phalanges in one foot. Each phalanx has three bones except the first phalanx (the big toe) which has two. The three bones that make up each phalanx are the proximal phalanges, intermediate phalanges and distal phalanges. The big toe or first phalanx only has the proximal and distal phalanges. Posteriorly, each of the phalanx bones of the first row articulates with the metatarsal bones. The proximal phalanx bone of the first phalanx, articulates with the corresponding metatarsals posterior to it.

Intermediate phalanges - anatomy of the foot boneCredit:

The bones that make up the foot bone anatomy have different functions. Some of them support the human skeleton and help in movement while others do the same and also form the shape of the foot.

Distal phalanges - anatomy foot boneCredit: