now that you got you saddle where it should be you should give the fixie a rest for a while. if you knee is already aggravated then no matter where your saddle is it will only make it worse. yes and lots of ice and ibuprofen

I second/or third the statement about the importance of saddle height. I have been having some knee pain that was diagnosed as patellar tendonitis. I thought my positioning was already good based on what I have read on the web but until I had a professional fit me I didn't realize my saddle was more than an inch too low!

I really recommend getting a professional or someone who knows what they are doing fit you. It's really hard to get it right when you do it yourself. Also, when someone looks at you they can tell if you are making some strange motion that you can't see yourself. I think I got lucky, because the guy at the local shop seemed pretty competent and thorough. He charged $40 but it was worth it!

Yes, You can get away with some incorrect positioning on a SS/FW bike that you can not with a fixie. I think the stresses are different on the knee because you are always "connected" and there is no pause or lag. I suggest this approach. Using a Video camera and a stationary trainer tape your ride from all angles you can and then study it. I was trained in the "Fit Kit" and after the initial fit I would make a video tape and would study it with the rider and make small changes. It is amazing what you can learn from this videotaping since you almost never see yourself while your riding. With the new digital video cameras you can get great close ups of all the areas of concern, and slowmo is amazing. It can be really enlightening. You see knee action etc. The view from the front shows you pronation and knee alignment. From the side the knee pivoi in relation to the hip/seat. It is just amazing!!! What you can see. I am getting a new JVC Camera from HSN, it does all I need for $250. I have a good fluid trainer and tripod. My old JVC was strictly analog and BIG. It finally crapped out. Now how do I explain the CC charge to my wife?

See, though, the only thing that concerns me about getting a professional fit is the potential for heavy 'suggestions' from the 'fitter.' I met this guy recently who told me that he got a professional fit upstate for 160 bucks or something--that's more than my bike cost. Then, he said, because of the session, he got talked into swapping just about everything out of his bike and replacing it all to the tune of 700 dollars. I like the idea of getting the 'perfect' fit, but I know that if I do, the fitter is going to end up telling me that my 120-dollar beater fixie conversion is all wrong, and that I need to go and invest in a 600/700 dollar track bike. I just don't see that as a good. And though I do think bike fit is important, I'm also leary of someone who tells you that unless you have the absolutely perfect (i.e. expensive) gear setup, you're doomed to a life of chronic pain and injury. Do any of these 'fitter' people work with what you have? Just wondering, is all.

I fear sounding like an advertisement, but....

ITS ALL ABOUT THE SUPERFEET. They are insoles that you put in your shoes and they help to position your foot right. Yes this effects your knee as well as your alignment etc.

If you dont belive me, perform this test (superfeet required - they have them available to try at any athletic shoe store): stand barefeet, legs hip distance apart, knees slightly bent and arms straight out in front of you. have a friend try to push your arms down while you try to keep them parrallel to the ground. Notice your weight shifts to your toes and you come off your heels. NOW, put the superfeet on the ground and just stand on top of the insoles as if they were in a shoe. Now perform the same test with your friend. This time notice that your weight stays evenly balanced at the center of your feet and your heels and toes are both firmly on the floor. Also notice that you are able to keep your friend from pushing your arms down with less effort. And then if you are me you spend your grocery money for every pair of shoes you own. They really help me since i pronate badly and am pigeon-toed.

They really should pay me for this.

When i had a fitting recently, the only thing they tried to sell me was the LeWegde for 24.99. And i am glad they did. I wasnt charged for labor, because i only needed a couple of minutes for them to make some minor adjustments. They did recomend a zero setback seatpost, which would also require a longer stem, but they did not push me to buy them there, and infact even offered to swap the thomson seatpost from my mountain bike and so it would be set up perfectly.

Since your not getting fit for a new bike, i would think your lbs would be able to help you get your set up dialed in, without taking too much time, and at a pretty low cost