John Sciulli

Bummer for Lady Gaga fans. One day after postponing a series of shows due to joint inflammation, the singer was forced to cancel the remainder of her Born This Way Ball tour and must undergo surgery to repair a torn hip. Live Nation, Gaga's promoter, released the following statement, posted on the singer's Little Monsters website:

Live Nation Global Touring has confirmed that the remainder of the Lady Gaga Born This Way Ball performances have been cancelled.

After additional tests this morning to review the severity of the issue, it has been determined that Lady Gaga has a labral tear of the right hip. She will need surgery to repair the problem, followed by strict down time to recover. This unfortunately, will force her to cancel the tour, so she can heal.

Refunds for the cancelled performances will be available at point of purchase starting Feb 14, 2013.

The massive tour began last April in Seoul, South Korea, with the singer performing 97 subsequent shows around the world. Her last show was Monday night at Montreal's Bell Centre. The injury forces the singer to cancel the tour's remaining 21 concerts, including two each at Madison Square Garden and Barclays Center.

The tour, as most things Gaga-related, was not without controversy. Conservative Christian groups protested her South Korean show, Muslim extremists forced the singer to cancel her Indonesia concert and Australian suicide charities denounced the debut of new song "Princess Die" in Melbourne.

Gaga herself has yet to discuss the cancellations on Twitter but in a series of tweets yesterday, she apologized for canceling select shows.

"I hope you can forgive me, as it is nearly impossible for me to forgive myself," she wrote. "It will hopefully heal as soon as possible, I hate this. I hate this so much. I love you and I'm sorry."