Each individual metacarpal is made up of a base, shaft and also a head. The medial and lateral surfaces of the metacarpals are concave, letting attachment with the interossei muscles. The bones of hand (Latin: ossa manus) get involved in the development of your terminal Portion of the upper limb. https://www.theorthopaedicandpainpractice.com/what-are-the-different-bones-found-in-my-hand/