The proper palmar digital arteries are oxygen-rich blood vessels that arises from common palmar digital arteries. They run along parallel to the phalanges, supplying the index, middle, ring, and little fingers. There are two proper palmar digital arteries for the middle and ring fingers. For the index and little fingers, there is only one. In the index finger, the proper palmar digital is complemented by the radial artery of index finger which arises from the deep palmar arch artery. In the little finger, the proper palmar digital is complemented by one of the common palmar digital arteries.