|Traumatic brain injury (TBI) results in a combination of physical, cognitive, and behavioral impairments. Broadly defined, traumatic brain injury is incurred due to externally inflicted trauma, which in turn results in impairment of an individualâs physical, cognitive and psychosocial functioning. Every year, an estimated 2 million Americans sustain a traumatic brain injury , which principally results from vehicular accidents, falls, acts of violence and sports injuries. Traumatic brain injury exceeds the combined incidence of breast cancer, human immunodeficiency virus, spinal cord injury and multiple sclerosis. The risk of traumatic brain injury is highest in the adolescent and young adult population between the ages of 15 to 24 years of age, and in the aged population 75 years and older. The National Institute of Neurologic Disorders and Stroke statistics clearly identified males being 1.5 times more likely than females to suffer a traumatic brain injury. An alarming number of affected individuals, according to Centers for Disease Control and Prevention, are the 5.3 million Americans who are currently impaired from traumatic brain injury, thus making it one of the most common disabling conditions.