All of the metacarpals and phalanges in the hands, as well as the metatarsals and phalanges in the feet, are part of the short bones. They are short, curved bones that connect to the carpus or wrist joint and the proximal end of the bone. The term "metacarpal" is used to describe any of the five slender bones making up the hand between the radius and the finger tips. They are also called "wrist bones". The terms "metatarsal" or "shoe bone" are used to describe any one of the seven slender bones in the foot between the tibia and the toe tip. The metacarpals and metatarsals are important in determining how people use their hands and feet during movement. These bones bear most of the weight involved in carrying out daily activities. They are also the points of attachment for many muscles that flex and extend the fingers and toes. Injury to these bones can have serious consequences for your ability to handle day-to-day tasks without assistance from others. Although they are not as highly developed as other bones in the body, young adults retain growth potential through repeated bouts of exercise (such as running) that stimulate bone cell activity. This process results in increased bone density and size over time.