Manage Leg Length Difference | Bike Fit
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- čas přidán 26. 02. 2017
- Another question from a subscriber answered here...how do you deal with having one leg longer on the bike?
Leg length differences, or discrepancies, are really common and many people get told they have one leg longer than the other. But how it was measured and how much of a difference there is are key questions to answer. Many would be surprised to know that you often don't need to do much with a leg length issue much of the time.
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Thanks for the video. I got measured by a physio and was told one of my legs is about 15mm short. He suggested the LL shims but could not tell me the correct amount to use for the correction. Now I know that I don't have to correct the whole 15mm. I was a bit worried about using a lot of shims to do that.
I have been dealing with this exact problem lately. I've noticed my situation improving as I work on my flexibility and strengthening my core muscles, specifically the glutes. Tight hip flexor on my right side has caused tightness down my leg and even the lower back. Foam rolling and flexibility exercises are slowly fixing the problem.
heads up to u sir most of the cycling channels here in yt give info but doesn't work like RCA and bikefit Tuesday ur different from others Perspective u make it possible for me to just add 1mm and 2mm and it makes a difference over time
At
What can i say but thank you :)
Oh I wish you lived closer to me. I need a professional like yourself!
I've heard from various sources conflicting data on measured ranges in which to proceed with a correction versus letting the body compensate on it's own. Any thoughts?
N.B. Functional leg length difference often changes in forward flexion, as in a more aero position, as muscle tension about the hips and pelvis change. Test the difference in standing at the PSIS, laying flat and sitting at 90 degrees hip flexion. Use this info for a more informed decision on what to do next.
What is the maximum amount that can be compensated for? I have a 7 CM LLD, roughly 2.75 inches. Is there anything that can be done be it modifying a bike or would I need to have another pair of shoes modified?
I'm riding a Peloton bike, and I'm 64 years old. At age 35, I had a femoral osteotomy that changed the position of the femur to socket. Since, I have had a replacement, but the head of the femur is distorted and sticks out to the side, and they didn't do anything to change that. All of that has caused my left leg to be shorter. I have never gotten an exact measurement of the difference, but I do wear a 1/2 heel lift in my outdoor shoes. Since starting on the Peloton, I have noticed that I can't actually push/pull the pedal through the cycle on the left side, so the right side is doing all of the work. I am noticing a huge difference in the amount of work the right does compared to the left leg, and the calf muscles are definitely showing this difference. My right calf is 1/2" bigger than the left calf. What would you suggest I do?
what about moving one cleat forward? won't that help to mute leg length differences? that way the knee extends less.
Very clear explanation. Many thanks!!
I had a fit that determined one leg of mine is 10mm longer.He advised me to buy 175mm crank and 165mm on the other side and I gotta say it worked.
Is there a difference between using different crankarm length vs using a shim?
After a bad car accident (29 years ago) an orthopedic doctor diagnosed me with almost ½" leg length discrepancy. I had been oblivious. Putting in orthotics for running solved hip problems for me. Putting one larger riser dramatically improved my skiing. I recently have been trying a 5mm shorter crank, on the short leg side, on my new TT bike. I feel like I'm a bit smoother, more stable with the uneven cranks. However, I feel like I am having to work harder, climbing out of the saddle. (Climbing out of the saddle has no issue of distance from seat to peddle, which was the main idea behind.) Thoughts?
Hi,
My left leg is 17mm shorter than my right - 3mm femoral and 14mm tibial- it was measured by a ct scan. and diagnosed medically as a structural LLD- I find standing for long periods very tiring, and and walking great distance causes me pain in my right hip.and some left lumbar pain ..
How would you address a foot length difference of one shoe size? Buying one pair that kind of fits both feet is a compromise, with both comfort and cleat placement. With my running shoes, I just purchase two different sizes (on sale) and sell the other two on eBay. I assume this could also work for my biking shoes, just gets a tad expensive.
I have 9 mm difference in "ankle height" due to being born with a club foot. A CT scan confirmed the tibia and femur lengths are equal. This has resulted in back issues (herniated disc) on the low side as I've gotten older. I have already address this for everyday living by having 9 mm added added to the bottom of my various shoes. And I'm in the process, through physical therapy, of correcting an oblique pelvis that has resulted (the lower side has an anterior rotation). Based on your very informative video, what is your recommendation for a shim thickness when all the height discrepancy is all in the ankle. In other words, should I start with a simple 3mm shim? Or should I go with a greater thickness, especially with the anterior pelvic rotation further presenting a lower right side?
Great video.