A hand is a part of a person's body which he uses from the very beginning to the end of his life, every day and a lot. Disturbance of it's integrity or integrity of any of it's parts results in disability and significantly harder functioning in professional and private life. Due to the complexity of hand's functions, it's anatomy is also complex and the hand is divided into front side, palm, back side and fingers. Complex hand injuries usually occur during car accidents or accidents of some other kind and as a result of workplace accidents. No matter the injury mechanism, hand injury always demands detailed examination and history. After the examination, imaging methods are in order which are supposed to help the surgeon to make a reconstruction plan in collaboration with a patient so that the plan suits patient's needs. At the beginning of the operation surgeon has to remove devitalized tissue. That is done from outside of the wound to the inside. Unlike debridement, reconstruction is started from the inside, most commonly by stabilizing bone structures and after that the reconstruction of soft tissue starts. Last, but not less important segment of hand injury patient care is rehabilitation. After the operation it is necessary to restore hand function as good and as fast as possible. That is accomplished by immobilization, the most conservative but usually inevitable rehabilitation method. They aspire to start passive and active movements to prevent contractures and reducing movement range.