The "Beautiful" hitmaker was injured while she was shooting a music video for a remix to her hit song. It has been a long road to recovery since.
She shared her ordeal via a candid letter on her page on social networking site Facebook, reports femalefirst.co.uk.
"The last three months of my life have not been easy. Getting through this injury has been the toughest experience of my life. It took me three months to get to this point but thank god I was able to recover and get my arm back," posted Carey.
She says the recovery has been rather quick, and she has thanked her therapists for it.
"It's a huge deal. It should have taken eight months and even my doctors can't believe it. It's been a long journey, the physical therapists have been incredible and I am very grateful to all of them for helping me," she added.
The 43-year-old has twin children, Moroccan and Monroe, with husbandNick Cannon.
She is now raring to go.
"When people expected me to go, 'Here I am, I'm back and everything's great', it didn't happen because my hand was still in tremendous pain and it took this long for it to heal.
"I've been working day and night, and it took a lot of rest (though I did sneak in to the studio a couple o' times!) but I can finally say that I am on my way to a full recovery," she said.
She will release make a comeback by releasing a new studio album, which she says is one of the "most important" records she's ever made.
--IANS (Posted on 13-10-2013)