A number of patients who need urgent surgery for ruptured aneurysms, brain traumas, brain tumors, or other neurological injuries need to have a portion of their skull removed that’s later replaced, necessitating a second operation, a “cranioplasty.” That second procedure puts them at risk of adding insult to injury and may leave them looking significantly different in comparison to their presurgical appearance, says Johns Hopkins’ neurosurgeon Judy Huang. Replacing the portion of missing skull at a later …