Every metacarpal is made of a foundation, shaft in addition to a head. The medial and lateral surfaces of the metacarpals are concave, enabling attachment of your interossei muscles. Os Scaphoideum A ship-formed carpal bone commonly involved in wrist fractures. It’s very important for keeping carpal stability and wrist movement. https://www.theorthopaedicandpainpractice.com/what-are-the-different-bones-found-in-my-hand/