This is a traumatic digit injury of a young male who got his finger bitten off after trying to break up a dog attacking his dog. He got out fine. He rushed into the ER and right into a 7 hour surgery to reattach his finger, which had everything severed apart from a flexor tendon and a nerve, the rest had to be reattached. The goal of replantation (or re-attachment surgery) after traumatic amputation is successful restoration of function. Simply returning circulation to an amputated part does not in itself define success.With the advancement in microsurgical techniques, replantation is usually done in a fixed manner.Osteosynthesis (rigid bone fixation using wires) with or without shortening of bone is initially performed, followed by flexor tendon/muscle repair; extensor tendon/muscle repair; nerve repair; arterial and venous repair (with vein grafts if necessary); skin grafting or local flap if necessary; and microvascular transplant coverage of major wounds if necessary after improved potential part survival.