Kemoeatu, Lewis and right offensive tackle Jeff Otah practiced Wednesday after being sidelined by injuries late in the regular season.
Hangartner and Jeremy Bridges have split time at right guard after Keydrick Vincent was placed on injured reserve last month with a groin injury. Bridges is expected to start Saturday.
Kemoeatu left in the second half of Carolina's Dec. 14 victory over the Denver Broncos and missed the next two games, leaving the Panthers without their top run stuffer. That helped the New York Giants rush for 301 yards in an overtime victory that prevented Carolina from securing the No. 1 seed in the NFC.
"I feel 100 percent, and I'm ready to go," Kemoeatu said.
Lewis injured his shoulder during the second half of the Dec. 21 game against the Giants and missed the regular-season finale at New Orleans.
"If we had to go, I would have tried my best to," Lewis said. "But I don't know if I could have."
"It feels good to get back out there," Otah said. "I'm happy we had that bye week so I had a chance to get back to 100 percent."
Copyright 2009 by The Associated Press