In certain types of facial nerve injury, including injury caused by trauma, tumors or from surgery, permanent and severe facial weakness or paralysis may result. In such cases patients have potential options to help aid with the symptoms resulting from such injuries. Type, location and duration of injury all help determine the best way to rehabilitate severe facial weakness or paralysis. In a select group, reconnection of the facial nerve may help restore some of the facial nerve function. Connection of the facial nerve may occur by reconnecting the facial nerve to itself, or to other nerves such as the nerve that controls tongue movement or chewing can be connected to the facial nerve. Many factors are involved in determining who potentially is a candidate.