It's the Overdid It Club...and not somewhere we want to be. I agree with Layla that the Nustep could be aggravating something. It engages your calves, quads, and glutes. Here's a great article that can explain some things to watch for Muscle guarding Josephine will surely let you know if it sounds like bursitis but until then, please try to baby it some. 9 months since your last revision..still possible to make things complain. I'm sure new complaining must make you anxious after all you've been through with that hip. Hugs and best wishes!