Falls cause more than 60% of head injuries in older adults. Lack of objective evidence on the circumstances of these events is a barrier to prevention. Falls. Approximately 8% of persons aged 65 and older visit the emergency department each year because of a fall-related injury. Approximately 10% of falls in older people result in other injuries, such as TBI, and consequently, falls are the most common cause of TBI in older adults.MECHANISMS OF INJURY · CHRONIC HEALTH · TBI OUTCOMES IN OLDER.