A case of fused capitate and trapezoid, the os capitatotrapezoid (OCT), was
found in an articulated right hand of a male skeleton. Fusion was almost c
omplete except for shallow grooves demarcating the line of fusion on the pr
oximal and distal aspects. Radiology revealed a normal trabecular pattern a
nd no joint cavity within these fused bones. The styloid process of the thi
rd metacarpal was absent.