Abstract: Objective　To analyze the morphology of the hook bone and its intravascular bone shape by using the mimics software 3D visualization , which provided an anatomical basis for the treatment of hook fracture and its related surgery.　Methods　Twelve cases of fresh upper limb specimens were selected. After perfusion, Micro-CT scan was performed. The data were imported into Mimics software to reconstruct the hooked bone and its blood supply.　Results　The hooked bone had 3 non-articular surfaces. The dorsal and volar surfaces were triangular, and the lateral side of the palm extended laterally to the volar side to form a hooked bone hook. The hooked bone hook was divided into a top side, a middle side and a base side. The distal joint surface of the hooked bone and the base of the 4th and 5th metacarpal bones formed the carpometacarpal joint, the radial side and the head bone formed a joint, and the ulnar side and the triangular bone formed a joint. The non-articular surface on the dorsal side was branched into a number of nourishing blood vessels into the bone of the hook bone by the micro-arterial network, and the hooked bone blood supply supplied in all directions. In the volar side of the non-articular surface hooked bone, which was, the 1-2 root nourishing blood vessels of the basal part of the hooked bone hook branched into the bone directly, and travelled to the hooked bone body and the hooked bone hook respectively. Part of the specimen had a nourishing blood vessel on the ulnar side of the base of the hooked bone, thereby entering the bone and branching into the hooked bone. There were separate small blood vessels at the tip of the hooked bone that entering and branching within the bone. The iliac bone branch of the humerus at the base of the hooked bone was consistent with the intravascular branch of the trophoblastic nucleus from the dorsal side of the hook bone and the hook of the hook.　Conclusions　The blood supply in the hook bone is rich, and ischemic necrosis is difficult to occur. The conservative treatment of nonunion of hook-and-loop fractures may be caused by the type of fracture and the degree of displacement.

Key words: Hamate bone,  ,  , Intraosseous vessels,  ,  , Anatomy, 　Mimics software