Madonna may have gyrated like a 20-year-old at the Grammy Awards, but her body felt the brunt of it later.

Following last week's high-octane performance, Madonna had hernia surgery at Cedars-Sinai Medical Center, the New York Post reported Wednesday.

The 47-year-old singer appeared "pale and had no appetite" after the surgery. At the Los Angeles Kabbalah Center on Feb. 10, she did not eat or lead the after-dinner prayer as she usually does when there. Husband Guy Ritchie was absent, the Post reported.

"Whatever was commented on in the New York Post is what we're confirming," Briele Douglass said Thursday. She is an assistant to Madonna's publicist.

Last summer, a horse accident in London left Madonna with a broken collarbone and three cracked ribs.