Tarsal bones form the arch of the foot from "summary" of Bd Chaurasia's Human Anatomy, Volumes 3 & 4 by B. D. Chaurasia
The arches of the foot are formed primarily by the tarsal bones. These bones are arranged in a way that creates a support structure for the foot, allowing it to bear weight and provide stability during various activities such as walking, running, and jumping. The tarsal bones include the calcaneus, talus, navicular, cuboid, and the three cuneiform bones. The calcaneus is the largest tarsal bone and forms the heel of the foot. It plays a crucial role in absorbing shock and providing leverage for movement. The talus bone sits on top of the calcaneus and is essential for articulation with the tibia and fibula bones of the lower leg. Together, the calcaneus and talus form the hindfoot, which supports the weight of the body. The navicular bone lies between the talus and the three cuneiform bones. It helps to maintain the arch of the foot and provides stability during walking. The cuneiform bones are wedge-shaped and are located in front of the navicular bone. They contribute to the transverse arch of the foot and play a role in weight distribution. The cuboid bone is located on the outer side of the foot, near the base of the fourth and fifth metatarsal bones. It helps to support the lateral arch of the foot and provides a stable base for movement. Together, these tarsal bones work in harmony to form the arches of the foot, allowing for efficient weight-bearing and propulsion during locomotion.- The arrangement of the tarsal bones in the foot is crucial for maintaining proper foot mechanics and preventing injuries. By forming the arches of the foot, these bones provide essential support and stability for the body, allowing for a wide range of movement and activities.
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