We interviewed a group of 259 deltasailors about their injuries which befell them in Switzerland during their sports activity. They reported on 257 incidents, 8% of which were contusions and 24% resulted in fractures. 70% of all injuries affected the arms or legs, whereas 30% were located on the head or trunk. An accident occurred far more often during the landing phase (72%) than at take-off (28%). The mean hospital stay was noticeably longer for injured women (15 days) than for men (8 days).