Neurosurgery is a discipline of Surgery that deals with the diagnosis and treatment of the conditions of the brain, spinal cord and peripheral nerves. It also includes minimal access therapy as well as diagnostic and therapeutic endoscopies of the above. Common neurosurgeries include percutaneous hydrocision lumbar discectomy, minimally invasive cervical and lumbar spine fusion, radiofrequency therapy for chronic pain, percutaneous endoscopic and microendoscopic lumbar discectomy, SATELLITE system PEEK nucleus replacement and lumbar disc nucleus replacement.