Yes, as with any surgery, there is a minimum but possible risk of something going wrong. Among the potential risks, patients might adversely react to anesthesia, experience more than expected bleeding, an infection in the affected area, jaw nerve damage, bone fracture, and undesired results or relapse, which might require additional surgery. Also, a bimaxillary osteotomy requires treating both jaws, increasing the risk of complications compared to surgery on either the mandible or maxillary alone.