Just wanted to add my story here in case it helps another web searcher. I came across this board about two months ago after noticing a dent on my right upper thigh. It was about three inches down from the hip and ran from the centerline to the outside, about one inch high and three inches across. It sounds very similar to others described here. I am a 44 yr old female that works out regularly, and am not overweight. I "freaked" and did a lot of web searching when I first found the dent. I first noticed it two days after doing the elliptical machine for the first time in years. I did not feel a muscle strain at the time, but the area above and below the dent was very tender, including the top of the IT band. I went to an orthopedic doctor who x-rayed my hips, which were normal and diagnosed a probable hip flexor strain. He sent me to physical therapy. Neither he nor my PT had seen a dent like this before. After about a month of treatment at the PT, my dent is smaller but unfortunately is still there. I have been treating with stretching, ice, and Graston treatment. I do think it will eventually go away and that it probably was a muscle tear OR even something that was there all along (genetic) but somehow became aggravated. I do think there is a possible connection to the elliptical. As it was explained to me, elliptical machines are built for 5 foot 10 inch men. When a 5 foot 3 inch woman uses it, the stride length is too long which can cause injury to the hips or back on the "down stroke." Makes sense to me. I would love to see updates from the other "dented" people. But in the meantime, I will continue to stretch, massage, ice the area and hope for the best. I guess an MRI would definitively show a muscle tear but I wasn't in enough pain to justify it, in my opinion.