KANSAS CITY, Mo. (AP) — Some of the people who attended the near-record cold Kansas City Chiefs playoff game in January had to undergo amputations, a Missouri hospital said Friday.

Research Medical Center didn’t provide exact numbers but said in a statement that some of the 12 people who had to undergo amputations after the cold snap had been at the game. The amputations involved mostly fingers and toes. And the hospital said more surgeries are expected over the next two to four weeks as “injuries evolve.”

The University of Kansas hospital said it also treated frostbite victims after the game but didn’t report any amputations.

The temperature for the Dolphins-Chiefs wild-card playoff game was minus 4 degrees Fahrenheit (minus 20 Celsius), and wind gusts made for a wind chill of minus 27 degrees. That shattered the record for the coldest game in Arrowhead Stadium history, which had been 1 degree Fahrenheit (minus 17 Celsius), set in a 1983 game against Denver and matched in 2016 against Tennessee.

The wild-card game was played the same day the Buffalo Bills were supposed to host the Pittsburgh Steelers, but that game got pushed back a day because a snowstorm in New York made traveling to the game too dangerous.

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The game in Kansas City went on as scheduled because the frigid weather didn’t present similar problems getting to Arrowhead Stadium.

While a blizzard dumped up to 2 feet (0.61 meters) of snow in Buffalo that weekend, the snow wasn’t the problem in Kansas City, where the big concern was what the National Weather Service called “dangerously cold” wind chills.

Frostbite can occur on exposed skin within 30 minutes, said Dr. Megan Garcia, the medical director of the Grossman Burn Center at Research, in answering one of the top questions she is asked. She said the timing can be even shorter if there is a wind chill.

Fans were allowed to bring heated blankets into the stadium and small pieces of cardboard to place under their feet on the cold concrete.

The coldest game in NFL history remains minus 13 Fahrenheit (minus 25 Celsius) for the 1967 NFL championship, when the Packers beat the Cowboys at Lambeau Field in a game that came to be known as the Ice Bowl. The wind chill that day was 48 below zero (minus 44 Celsius).

The Chiefs didn’t immediately respond to email messages from The Associated Press seeking comment.

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Stapleton reported from Englewood, Colorado.