The Brazilian tells Tatame.com:

"I hurt my hips training and I’ll have to go on surgery. I’m only depending on a few exams, but I think it’ll be done by the weekend. The surgery will be on both sides of my hips, and I’ll operate my knee too. If everything goes alright I’ll be back on training in four months."

That surgery boots "Big Nog" from his upcoming rematch against Frank Mir, originally scheduled for UFC 119 in Indianapolis, Indiana. The good news is that famed Croatian striker Mirko Filipovic has being tagged as a possible replacement for the Brazilian, who also gets his knee worked on while he's under the knife. "Minotauro" is expected to be out of action for at least four months.