Manilow's final pre-surgery performance will be at the Aug. 27 Emmy Awards, E! Online reports.
Manilow, 60, has torn cartilage in both of his hips and dancing during his Las Vegas stage show is only making the condition worse, his publicist said.
"I'm anxious to make it through the Emmy Awards and then right to the hospital," Manilow said. "The doctors have promised me that I'll come back even better than before. And I can't wait to hit the stage again."
Manilow was briefly hospitalized in 2004 in Palm Springs, Calif., after experiencing chest pains later attributed to stress. The year before that, he broke his nose after accidentally running into a wall in his Palm Springs home.