has part has part characteristic of inheres in has modifier Bifid distal phalanx of the thumb 2009-01-29T03:48:49Z Notched outermost bone of thumb HP:0006090 HP:0005703 HP:0005827 HP:0005848 Notched terminal thumb phalanx Notched outermost bone of the thumb UMLS:C1860162 Incipient distal thumb phalanx duplication HP:0009611 Bifid distal phalanx of thumb Bifid thumb distal phalanx Note that with bifid distal phalanx, the terminal phalanx of the thumb is clefted but is still one bone. With duplication of the terminal phalanx of the thumb, the distal phalanx is split into two bones that are located side by side. With triphalangeal thumb, the thumb has three phalanxes located one after the other. Bifid terminal phalanges of thumbs Partial duplication of the distal phalanx of the thumb. Depending on the severity, the appearance on x-ray can vary from a notched phalanx (the duplicated bone is almost completely fused with the phalanx) to a partially fused appearance of the two bones. HP:0004086 Duplication of the distal phalanx of the thumb Partial duplication of thumb phalanx Partial duplication of the distal phalanges of the hand cleft abnormal distal phalanx of manual digit 1