Palhares was expected to face perennial top ten middleweight and former title contender Yushin Okami on the UFC 150 card in Denver on Aug 11.
Team Greg Jackson fighter Buddy Roberts stepped in as a replacement as MMAWeekly.com first reported late Tuesday night and he will now face Okami instead.
Speaking with MMAWeekly.com, Palhares’ manager Alex Davis confirmed his fighter’s exit from the card and the fact that he will likely have to go under the knife.
“He has damage to his knee, will probably require surgery,” Davis wrote in an email.
It was just earlier in the day on Tuesday that Palhares released a video talking about the tragic theater shooting that took place in Aurora, Colorado as he sent out his sympathies to the victims involved.
The injury will sideline Palhares for the foreseeable future, although should the knee not end up requiring surgery his return would come in a much quicker time.
MMAWeekly.com will have more information on Palhares’ injury and return date when it becomes available.