I've been having this same problem for over two years. I'm so glad I've finally found a "support group" of sorts. It would be great if some of you smart folks could give me some individual insight on my situation. The sensation almost feels like a "numbness" going all the way down the side of my right leg and around the inside of my quad muscles. although, "numbness" might not be an accurate description, but I don't want to call it "pain" because it doesn't really hurt. Some days are worse than others. Often times I'm able to make it through a whole ten miler without it really bugging me and sometimes it bugs me right at the start of a run. But it's especially bad when I get up to around tempo pace or faster, it's like my leg just doesn't want to move in a straight line.
History: It began after my sophomore high school track season. Around July while building a base for the coming XC season, I noticed a weird, random fatiguing sensation in my right quad. I got a doctor's appointment and he put me on some VMO and glute strengthening exercises with ankle weights. This was a termporary success as I was able to race 5000 meter XC races without much trouble. Like an idiot, since my symptoms were better, I quit doing the exercises and the coordination troubles came right on back during track season. I was able to race the 800 and 1600 without really any trouble, but my leg would just "give out" around lap 5 or 6 in the 3200. I would literally almost trip over my self it was so bad. It was like my right leg couldn't figure out where it was supposed to hit the ground. It was like that loose and "whipping sensation" that LOST! was talking about. My form will look perfectly normal for a few laps and then BAM, my right leg will just fail.
I skipped XC in the hopes that some rest would make it better, but to no avail. It was even worse my senior track season. I couldn't even make it through a 1600 without practically tripping over myself by the third lap. I was able to race the 800 and 4x8, but even then it would sometimes crap out on me, but the race is so short that I could sort of "fake" my way through it. I'm able to "fake" my way through interval workouts as well. I can still feel the sensation, but the rest interval allows me to complete the workout. Because of all this, I can still get very fit, but that doesn't matter if I can barely even race!
Right now, I'm attempting to run for my college track team, but I really don't want to be "that guy" who's just perpetually injured and I want to run and compete soooo badly. Right now I feel like I'm in the best shape of my life other than the fact that my right leg is always failing. I can do my mileage and finish workouts, but I can't hold it together and race. Can I get some insight here? I have noticed that there is some popping in my hip. Does this sound like a labral tear or something else? Does anyone have any thoughts about trying trigger point therapy or ART?