Partial duplication of the phalanges of the 3rd finger Duplication of the middle phalanx of the 3rd finger Partial duplication of the middle phalanx of the 3rd finger 2009-05-26T12:49:59Z UMLS:C4024138 Partial duplication of the middle phalanx of middle finger, seen on x-rays as a broad and/or bifid phalanx. Partial duplication of the middle bone of the 3rd finger HP:0009969 Partial duplication of the middle phalanges of the hand