While it is true that neurosurgery is primarily focused on treating brain-related conditions (tumors, aneurysms, vascular disorders and the like), neurosurgeons work with health issues that span the entire spectrum of the human nervous system. This includes the brain, but also the spinal cord, vertebral column, peripheral nerves and the extra-cranial cerebrovascular system.
Source: Watch How CAE Healthcare’s NeuroVR Revolutionizes Neurosurgical Training | Healthy Simulation