It is only a myth that Africans have an extra bone in their foot. An extra bone in the foot can occur during child development if two of the bones do not fuse together properly, but that would not be exclusive to any one race of humanity.Know More
The average human foot has 26 bones, which is common for all humans. The big toe has two phalanges, and the other four toes each have three phalanges. In the middle of the foot are five metatarsal bones, each named metatarsal I-V. Directly connected to the metatarsal bones are four tarsal bones: the cuboid bone, the lateral cuneiform bone, the intermediate cuneiform bone and the medial cuneiform bone. Three more tarsal bones articulate with the tibia and fibula to form the ankle: the navicular bone, the talus bone and the calcaneus (also know as the heel bone).
Everyone has these bones in their feet. The myth that Africans have an extra bone in their foot or an extra muscle in their leg most likely comes from the perception that Africans are more athletic than any other human race. Especially in the USA, this is also a stereotype that is based in myth due to a majority of American professional athletes being of African descent.Learn more about Bones
According to University of Cincinnati's Claremont College, women do not have any extra ribs. Each human has the same 12 pairs of ribs, although an occasional exception does have one or two extra ribs.Full Answer >
Living bone contains about 10 to 20 percent water and 60 to 70 percent bone mineral, as explained by the University of Cambridge. The remaining material is mostly collagen with trace amounts of proteins and inorganic salts.Full Answer >
Cortical bone is a dense and rigid layer of calcium-rich osseous tissue that makes up the outer layer of a bone, explains InnerBody. This compact bone layer is cylindrical in shape with a honeycombed structure, providing thousands of tiny canal-like passageways for nerves and blood vessels.Full Answer >
A bone spur is a piece of bone that grows out from another bone, such as the heel bone or the vertebrae. Some bone spurs are asymptomatic and don't have to be treated. Other bone spurs, such as those that develop in Haglund's syndrome, are quite painful.Full Answer >