Bipartite carpals occur when one of the carpal bones is divided into two separate parts. This is considered a normal variant within the wrist. Typically, the most frequent bipartite carpal is the scaphoid or the triquetrum. However, it theoretically can occur in any carpal bone, including the hamate Epidemiology A bipartite hamate occurs in ~0.5% (range 0.1-1%) of the population, making it a relatively uncommon variation 1,2.