Slipping on ice or snow during winter caused 3.5 injuries per 1000 inhabitants per year in the Umeå health district; the injury rate was highest among the elderly. Most injured were elderly women, but also many young men in the age group 20-29 years were injured. Half of all injuries were fractures; for women 50 years and over two-thirds were fractures, mostly of an upper extremity. The 'cost' of medical care of these slipping injuries was almost the same as the 'cost' of all traffic injuries in the area during the same time. Injury reducing measures, such as more effective snow clearing, sand and salt spreading in strategic areas, better slip preventive aids on shoes, and 'padding' of older women, would reduce the injuries and their consequences.