"I think it's huge," Monahan said of returning. "It's my first skate with the guys. Mentally, it feels good to be out there with them and moving the puck around. I've been doing some skates here with (assistant coach Martin Gelinas) and doing a lot of work in the gym and doing a lot of rehab. This is moving along quickly. I feel strong and I'm confident right now.
"The back is a big part of your body and controls a lot of things. When we talked to our doctors, we were progressing it and making sure it's 100 percent when the first day of the season comes."
Monahan had an NHL career-high 63 points (27 goals, 36 assists) in 81 games last season. He had been named to Team North America for the World Cup but was forced to withdraw because of the injury.
"You want to be out there," Monahan said. "It's pretty painful. I've never really had an injury where I've sat out or took time off. This is pretty frustrating, but at the same time it's something you deal with. It's going to make you stronger. I've been doing a lot of little things to make sure nothing like this happens again.
"I don't want to be wearing the yellow (non-contact) jersey. I was happy to get out there with the boys today. I felt good. I'm confident. I feel strong."
Monahan said he'd be available to play if it were the regular season.
"There haven't been any setbacks. It's more precautionary," he said of wearing the non-contact jersey. "If it was the season and something like this was going on I'd probably be playing. Right now there's no timeline. We're just trying to make sure I don't think about it mentally or have it nagging throughout the season. We're trying to get rid of it and we're almost there."
In 237 career NHL games, Monahan has 80 goals and 159 points. He was a welcome addition to the group for Flames first-year coach Glen Gulutzan.
"I'm just glad he's out there," said Gulutzan, who was hired in June to replace Bob Hartley. "It's a good morning skate for him where there's no contact and let him get a sweat in. I know he was quite excited about it, getting out with the boys and being out there. It was a light little go-round. It's good for him. It's encouraging to see him on the ice. We'll see how he is on the ice and we'll just keep him progression."