NFL fans who attended a game in bitterly cold temperatures suffered extreme frostbite and needed to undergo amputations.
Spectators put up with bone-chilling -20C temperatures to watch the AFC wildcard match between the Kansas City Chiefs and the Miami Dolphins on January 13 but this had disastrous consequences for some who were exposed to the elements at the Arrowhead Stadium.
The Research Medical Centre in Kansas explained that it treated scores of people who had experienced frostbite during an 11-day cold snap at the start of the year. A dozen of those, including some who attended the NFL clash, had to undergo amputations involving fingers and toes.
Christine Hamele, associate vice president of HCA Midwest Health, said: "To date, 12 patients have undergone amputation surgeries, some of which attended the Chiefs game.
"Our specialised physicians and expert care team continue to treat and monitor patients' healing to address long-term needs, and we expect more surgical procedures over the next two to four weeks as their injuries evolve."