Third metatarsal bone

The third metatarsal bone of the foot.

The Third Metatarsal Bone is one of the five long bones, or metatarsals, in the human foot. Located in the center of the foot, it is the longest of the metatarsal bones. This bone is connected to the third toe and plays a crucial role in balance and propulsion.

Structure

The third metatarsal bone is a long bone in the foot. It is characterized by a base, a shaft, and a head. The base is the part of the bone that connects to the cuboid bone and the third cuneiform bone. The shaft is the long, slender part of the bone, and the head is the rounded end that connects to the third toe.

Bones of the right foot. Dorsal surface.

Function

The third metatarsal bone, like the other metatarsals, plays a crucial role in supporting the weight of the body and providing balance. It is particularly important in the push-off phase of walking or running, where it helps to propel the body forward.

Clinical Significance

Injuries to the third metatarsal bone, such as fractures or stress fractures, are common in athletes and can result from overuse or trauma. Treatment typically involves rest, immobilization, and in some cases, surgery.

Bones of the right foot. Plantar surface.

See Also

• Metatarsal bones
• Foot
• Human skeleton