I was borrowing Garmin power meter pedals for a while just for curiosity's sake. We finally got around to extracting the data and I'm sorta shocked to see the imbalance in power between my right and left legs. We're talking R:L ~65:35 (even 55:45 would be considered significant, from what I gather). I'm guessing this issue goes back to well before my cycling lifetime. When I first started running and started to increase my mileage and suffer overuse injuries they were ALWAYS on my right side. But I have sprained my left ankle twice. Which makes me think that for some reason my right leg has been doing the lion's share of the work for my weak left side.

So...this has me wondering why one side would be so much stronger than the other. I have long suspected that my right leg is longer than the left. Would that be enough to explain this, or should I be looking at something else? Does it even matter, or am I risking major problems (ie back, hip, knees, etc.) down the road?