What could cause aching pain like tissue tearing from left knee, up thru thigh, across groin & sometimes pain continues down right thigh to right knee. had xrays..shows some arthritis.. nothing unusual for age. g. Five years ago I did have left knee scoped because of torn minicus. These recent xrays of knees, upper thighs, groin & back does not suggest need for surgery at this time. Presently doing physical therapy for past 6 weeks..sometimes it helps for a time but pain always returns. Usually feel the best when I get up in morning, but pain returns after being up for about 2 hrs. I cannot run anymore because of this..leg hurts when I try to go up/down stairs..usually favor left & do 1 step at a time. I am quite active normally during decent weather. I spend a lot of time outside doing various yard projects in my 1 acre yard. I do go to a wellness gym especially during winter..mainly use eliptical & have started using leg press & leg curl machines with quite light weights .(advice from PT) I ve used a fitbit past 3 yrs. usually get 10000 steps during winter..much more Spring thru Fall. This condition started about 5 months ago.