Neurosurgery expert witnesses practice in a variety of fields, including medical malpractice, spinal injury, brain trauma, and neurosurgical device litigation. Some of the most common specialties include spine surgery, cerebrovascular surgery, neuro-oncology, pediatric neurosurgery, and functional neurosurgery. They can opine on the effects of surgical errors, delayed diagnosis, traumatic brain injury, and long-term neurological impairment.