What is the primary function of metatarsal bones?

The primary function of the metatarsal bones is to form the midfoot structure. These five long bones are located between the tarsal bones of the hindfoot and the phalanges of the toes. They play a crucial role in providing stability to the foot and allowing it to properly bear weight during activities such as walking and running.

The metatarsal bones serve as the foundation for the toes, supporting them during movement and enabling various actions like pushing off the ground. This midfoot structure is vital not just for balance but also for the overall biomechanics of the foot, facilitating efficient movement and weight distribution.

The other options, while related to foot anatomy, do not accurately describe the primary function of the metatarsals. For instance, while the ankle joint is supported by surrounding structures, the metatarsals do not primarily serve this purpose. Similarly, toe movement is largely facilitated by the phalanges and associated muscles, rather than the metatarsal bones themselves. The connection of the foot to the leg involves the tibia and fibula, along with ligaments, rather than being a direct function of the metatarsals.