I ran a marathon in October and then a 5k a week later. Ever since the the 5k I haven't been the same running wise. If I try to run faster than easy pace, my left leg just loses control and it take all my will power to make it move correctly. I feel like something is off. PT and orth med doc said my pelvis is aligned. My x-ray didn't show any FAI. I have not pain when running. Any clue?
I did start biking a lot and harder than I ever had after the marathon so maybe this has something to do with it>