Underwood, 34, previously said that she had broken her wrist after falling outside of her home, and on Sunday she revealed that the incident also caused severe cuts to her face.
In a post to her fan club members, the country singer said that in addition to having surgery on her wrist, she required “40 and 50 stitches” to her face.
“There is also another part of the story that I haven’t been ready to talk about since I have still been living it and there has been much uncertainty as to how things will end up,” she wrote in the note, which has been obtained by PEOPLE. “It’s crazy how a freak random accident can change your life.”
She continued: “In addition to breaking my wrist, I somehow managed to injure my face as well. I’ll spare you the gruesome details, but when I came out of surgery the night of my fall, the doctor told [Underwood’s husband] Mike that he had put between 40 and 50 stitches in.”
The accident left Underwood unable to perform at the Country Rising benefit show held at Nashville’s Bridgestone Arena soon after.
Seven weeks after the accident, Underwood said that she’s on the mend but “not quite looking the same.”
“I honestly don’t know how things are going to end up but I do know this: I am grateful,” she wrote. “I am grateful that it wasn’t much, much worse. And I am grateful for the people in my life that have been there every step of the way.”
But with a new year underway, Underwood is optimistic for what her future holds.
“I am determined to make 2018 amazing and I want to share things with you along the way,” she concluded. “And when I am ready to get in front of a camera, I want you all to understand why I might look a bit different.”
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