@njed Ed– The jury's out on the Stepper. I'm going to continue trying it, but with added caution: if my knee begins to holler, I'll step off of the Stepper. If that happens, it won't mean I'm giving up on the Stepper for all time. I'll be seeing my orthopedist in a few weeks and we'll be discussing further knee injections or is it now time for a TKR. While injections help with day-to-day living, it might take a TKR to redone once and for all with knee pain. At which time, the Stepper may still prove to be a useful tool. So, we'll see. –Ray