I had a right total knee replacement by Dr. Steven Moen in 2007 and the left in 2008. Surgery and rehab/recovery went extremely well and I have been very active and pain free since. But the true test was a hike down into the Grand Canyon and out, February 4-5, 2016. I hiked OUT of the Canyon on the Bright Angel Trail in 6.5 hours. I was told the average hiker does the trip out in 9-10 hours. Very happy with the success of the surgery and recovery!