has part has part characteristic of inheres in towards has modifier Synostosis involving bones of the hand Abnormal metacarpal morphology Metacarpal synostosis 2009-01-30T04:13:07Z HP:0005915 Fused long bones of hand Fusion involving two or more metacarpal bones (A synostosis of the first metacarpal and the proximal phalanx of the thumb can also be observed, note that the first metacarpal bone corresponds to a proximal phalanx). Synostosis involving the metacarpal bones HP:0006041 Synostosis involving metacarpal bones UMLS:C4021398 HP:0009701 Synostosis of metacarpals/metatarsals abnormal fused with metacarpal bone