Broken hand bone. Coloured X-ray of the right hand of a patient, showing a fracture (lower right) of the fifth metacarpal. The metacarpal bones are in the palm of the hands, connecting the carpal bones of the wrist (lower centre) to the phalanges of the fingers. The fifth metacarpal connects to the little finger. Broken bones are usually treated by being reset into the correct position and held in place by a cast to allow them to heal.