Cerebral contusions (a bruise on the brain) are a type of traumatic brain injury (TBI). Statistics for this specific type of TBI vary because the injury is sometimes minor and may never be reported. Each year, about 1.4 million people in the United States suffer a TBI. Of these, about 50,000 individuals will die, 235,000 will require hospitalization, and 1.1 are treated and then released from hospital emergency rooms. Individuals needing long-term or full-time care are estimated to be about two percent of the U.S. population.