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  1. #1
    big ring MIN's Avatar
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    Knee tracking on pedal stroke

    I have this tendency to move my knee inward toward the top tube at the peak of my pedal stroke. It's been this way for years but I wonder if this is a natural correction for some fit aberration or odd physiology. I thought nothing of it until I read this velonews article on fit where they mention F. Schleck's pedaling style that needed correction.

    Quote Originally Posted by article
    [the] exam also revealed weak ankles and wobbly knees that pushed his knees near the top tube as they swept up the pedal stroke, decreasing his ability to create power and potentially causing long-term injury.
    I got fitted a couple of years ago but knee tracking wasn't on the agenda. Any thoughts on the matter?
    Last edited by MIN; 02-09-09 at 02:38 PM.

  2. #2
    Carpe Diem bdcheung's Avatar
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    Your knee is out of alignment. Look into Specialized varus/valgus shims.
    "When you are chewing the bars at the business end of a 90 mile road race you really dont care what gear you have hanging from your bike so long as it works."
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  3. #3
    Senior Member dmb2786's Avatar
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    my right knee does this.
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  4. #4
    Acquiring new target.... carlfreddy's Avatar
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    Couldn't this also be an issue of needing more arch support in your shoes?
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  5. #5
    Carpe Diem bdcheung's Avatar
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    It's foot alignment.
    "When you are chewing the bars at the business end of a 90 mile road race you really dont care what gear you have hanging from your bike so long as it works."
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  6. #6
    Climbing Above It All BikeWNC's Avatar
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    Quote Originally Posted by bdcheung View Post
    It's foot alignment.
    Yes, I have the same issue. You can use the Specialized shims as mentioned that go inside the shoe or the Le Wedge shims that go under the cleat. Put the thicker side on the inside of the foot. Start with one, ride for a while and then see how it feels. Give your body time to adjust.

  7. #7
    Ho-Jahm Hocam's Avatar
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    Min, I noticed this exact same thing with myself a few months back and got some Le Wedge shims. The thick part of the shim on the bottom bracket side of your feet puts your knee back into alignment.

    I have had knee problems in the past and haven't had problems since, but I need more hours in the saddle to decide if that solved it.
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  8. #8
    big ring MIN's Avatar
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    For those with these shims, how did the change help your cycling? I don't have, nor have ever felt knee pain.

    Did you feel faster, fatigue less? Considering that I've not experience knee pain, I am trying to rationalize this change.

  9. #9
    Ninja cyclist Dago's Avatar
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    I thought you're supposed to pedal "knees inward"? At least a lot of the pros do.

  10. #10
    Ho-Jahm Hocam's Avatar
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    Dago, this is more like your knee is moving in a diagonal or curved line, closer to the top tube at the top of the pedal stroke.

    MIN, I seem to have less soreness after finishing the ride in the area where I was having problems, but as far as fatigue goes I noted no real change. However, "an ounce of prevention is worth a pound of cure". I was off the bike for a solid 3 months because of knee issues that could have more than likely been prevented through shims.

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  11. #11
    Village Idiot
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    I actually installed a shim in my right shoe to 'correct' for this. I did 1 shim to try it out, and my knee did not like it.

    I installed 2 on the left shoe, and that leg feels much better. They were both tracking similarly.
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  12. #12
    Ninja cyclist Dago's Avatar
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    Quote Originally Posted by Hocam View Post
    Dago, this is more like your knee is moving in a diagonal or curved line, closer to the top tube at the top of the pedal stroke.

    MIN, I seem to have less soreness after finishing the ride in the area where I was having problems, but as far as fatigue goes I noted no real change. However, "an ounce of prevention is worth a pound of cure". I was off the bike for a solid 3 months because of knee issues that could have more than likely been prevented through shims.

    Worst three months of my life.
    Ah I guess that explains. I already got worried if I had spent time on the trainer learning an incorrect pedaling technique. Especially since it felt a lot better to me, I can get more power to the pedals from my inner thighs when knees are inward.

  13. #13
    Senior Member
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    Try moving your foot closer to the crank and see if that alleviates the problem

  14. #14
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    As has been stated, the shims under the cleat are the way to go. I recently had some put under my cleats and it fixed my knee tracking issues. I didn't notice much pain before, but it has made my pedal stroke more efficient, which should pay dividends on longer rides. I haven't been off the trainer since I got them though.

  15. #15
    Banned
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    Quote Originally Posted by bdcheung View Post
    It's foot alignment.
    Sounds like knee cancer to me.

  16. #16
    hobo grahny's Avatar
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    +1 on lewedge or specialized shims. Adjusting your Q factor with cleat placement does not work to fix tracking issues. Need to shim to correct the angle so you track properly.

    Pedaling just feels more efficient when your knees track properly, and I feel like I have more consistent power (no data to back that up)... like the quads are all able to fire properly through the stroke. I had knee pain though, so this helped to alleviate most of it too.
    Last edited by grahny; 02-10-09 at 03:06 PM.

  17. #17
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    Quote Originally Posted by grahny View Post
    +1 on lewedge or specialized shims. Adjusting your Q factor with cleat placement does not work to fix tracking issues. Need to shim to correct the angle so you track properly.
    You can make (incremental) shims using ShoeGoo for $4. Build it up in layers.

  18. #18
    Knowing's half the battle SushiJoe's Avatar
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    I've got wedges in both cleats. One of the Best investments I've made, easily.

  19. #19
    Banned
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    Quote Originally Posted by SushiJoe View Post
    I've got wedges in both cleats. One of the Best investments I've made, easily.
    You expect to realize a gain when you sell them?

  20. #20
    hobo grahny's Avatar
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    Quote Originally Posted by BustaQuad View Post
    You expect to realize a gain when you sell them?
    I think he's going to realize a gain with pain free cycling and avoiding possible knee issues down the road.

  21. #21
    Senior Member TJKnight's Avatar
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    I recently purchased and installed a 3mm Hoggs Leg Length Shim (for Shimano SPD cleats) to compensate for my 3mm leg length discrepancy. Although at first, it felt like the only change was that there was a piece of plastic under my right cleat, after three weeks, I notice a considerable difference in IT band flexibility and stroke efficiency, and a slight difference in knee alignment.

  22. #22
    Senior Member DannoXYZ's Avatar
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    are you feeling any pain in the knees?

  23. #23
    Senior Member TJKnight's Avatar
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    me? no.

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