This poor guy had his hand chopped off due to an accident and underwent reattachment (replantation) of the amputated part of the hand back to its place. Replantation is the surgical reattachment of a body part, most commonly a finger, hand or arm, that has been completely cut from a person's body. With the repair of the nerves and vessels (artery & vein) of the amputated part it is possible to restore the function and survival of the replanted part. Nowadays, Technological advances and the use of the microscope have made possible the replantation of parts including thumbs, fingers, ears, scalps, facial parts, and genitalia. Photo by @ch.arslan626