Each year in this country, one of every three people over age 65 suffers a fall, resulting in nearly 16,000 deaths. The federal government estimates that 1.8 million older adults who fall are treated each year in hospital emergency rooms for nonfatal injuries - including bruises, fractures and head trauma - and that 433,000 of those individuals need to be hospitalized because of their injuries. Research published this month in the Journal of the American Geriatrics Society has found that a significant number of those falls - an average of 129 per day - involve the use of walkers and canes, the very devices on which millions rely to help them avoid the dangers posed by falling.