My femur CLL limit (using precice) was 8 cm, in the last few weeks I at 0.25 mm per day due to extreme tension in my thigh, and sometimes took a day off.
On my right femur I first lengthened 5.6 cm , then the Fitbone rod stopped working, I waited 3 years before I lengthened the remaining 2.4 cm using Precice, I thought it would be a breeze after such a long break, but I needed fascia release surgery again, and was down to 0.33 mm per day for the last few mm.
I doubt I could have achieved much more than another centimeter in the second CLL.
Now squatting makes me almost topple over forward, and the long femurs look spindly and disproportionate (TIb/FIb now is 0.7, was 0,79) and I will not wear short shorts in public. If I lengthen further (@ current 179cm) it will be to improve Tib/Femur for both functional and aesthetic balance.
is 10 cm femur lengthening safe or too much?
The whole 8cm limit on femurs was introduced when Paley was designing the Precise nail so it maxed out at that amount. Complications went up exponentially after that amount, sure he could have been safer and then set it at 7cm max but would have lost patients to Betz and other mechanical rods which can lengthen more. This is due to patients like yourself who have round number height targets they believe they must hit. After all it's a business.
Anyone who has been on this forum knows this is all a trade off. Lengthen more equals more height with generally worse proportions and worse athleticism while lengthening less means less height but you'll look closer to normal and keep more athleticism. Being able to prioritise proportions is a luxury for taller lengtheners if you are really short for where you live you probably don't have that choice and will just have to deal with loss of athleticism and covering up bad proportions with clever clothing choices.
Quote from: throwaway123456 on September 13, 2024, 12:44:58 AMMy femur CLL limit (using precice) was 8 cm, in the last few weeks I at 0.25 mm per day due to extreme tension in my thigh, and sometimes took a day off.
On my right femur I first lengthened 5.6 cm , then the Fitbone rod stopped working, I waited 3 years before I lengthened the remaining 2.4 cm using Precice, I thought it would be a breeze after such a long break, but I needed fascia release surgery again, and was down to 0.33 mm per day for the last few mm.
I doubt I could have achieved much more than another centimeter in the second CLL.
Now squatting makes me almost topple over forward, and the long femurs look spindly and disproportionate (TIb/FIb now is 0.7, was 0,79) and I will not wear short shorts in public. If I lengthen further (@ current 179cm) it will be to improve Tib/Femur for both functional and aesthetic balance.
Are you saying the reason you couldn’t do another 5.6 cm on second surgery was because your soft tissues still hadn’t recovered from your first one, even after three years?
Theoretically, it should be as easy as during your first surgery if given enough time and three years was plenty of that. I myself am interested in multiple lengthenings. Could you please share more details on this part? Was it the pain, the loss of flexibility that made you stop or something else?
bump
Quote from: Taller90 on September 12, 2024, 11:19:54 AMBull it all depends where you are starting from and where you will end up (bone length, ratio etc). People who have short femurs can do it. People with average femurs probably not…
Finally the lengthening speed and how much you walk during the lengthening are key.
Good luck.
Isn’t it the other way around? People with longer femurs can lengthen safely more?
He’s pointing out that someone with short femurs can lengthen more because it would be better for the T/F ratio vs vice versa.
Quote from: RandomDude on October 03, 2024, 09:24:16 AMHe’s pointing out that someone with short femurs can lengthen more because it would be better for the T/F ratio vs vice versa.
Ah, but in all honesty it should be the least of worries
I'm no LL expert, but on top of what he said my commo sense tells me to remember longer bones can be mechanical disadvantages from the start making lengthening them more dangerous and possibly crippling.
On paper more bone to work with seems like more height, but at what cost? Most shorter people in good health can reach 90 years old without ever experiencing back pain or joint problems. Meanwhile many taller guys will be complaining about back pain in their 20s.
I'm 188cm / 6'2 naturally and at 35 years old have already had rounds of back and knee problems. I'm very lightweight 77kg/ 170 lb and somewhat athletic but I have a hard time running and I feel the stress in my bones due to their length. Now imagine someone 6'6/200cm and the disadvantages they face would be many times mine are; them trying to lengthen would probably be guaranteed wheelchair.
So technically yes someone like me has long bones to work with, but if I were to do a full 8cm/6cm lengthening I would probably be lucky to ever walk again, as I would be putting myself deep, deep into the danger zone of mechanical problems.
longer/taller isn't always better. Lengthen with care, don't push the limits and enjoy your life!
Quote from: darksol64 on October 06, 2024, 02:06:01 PMI'm no LL expert, but on top of what he said my commo sense tells me to remember longer bones can be mechanical disadvantages from the start making lengthening them more dangerous and possibly crippling.
On paper more bone to work with seems like more height, but at what cost? Most shorter people in good health can reach 90 years old without ever experiencing back pain or joint problems. Meanwhile many taller guys will be complaining about back pain in their 20s.
I'm 188cm / 6'2 naturally and at 35 years old have already had rounds of back and knee problems. I'm very lightweight 77kg/ 170 lb and somewhat athletic but I have a hard time running and I feel the stress in my bones due to their length. Now imagine someone 6'6/200cm and the disadvantages they face would be many times mine are; them trying to lengthen would probably be guaranteed wheelchair.
So technically yes someone like me has long bones to work with, but if I were to do a full 8cm/6cm lengthening I would probably be lucky to ever walk again, as I would be putting myself deep, deep into the danger zone of mechanical problems.
longer/taller isn't always better. Lengthen with care, don't push the limits and enjoy your life!
Thanks, but what you are saying is negligible, and theoretically you are wrong since you can perform LL safely at any height assuming you follow basic limits, so no idea how a 6’6 would automatically get crippled just because of longer legs. You should elaborate on that medically.
Also, I’d rather be 6’6+ with severe back pains and big limp than remain perfectly healthy with ideal godlike proportions at my current height. As someone with chronic pain I am already glad I am still alive, so all those miniscule risks don’t matter to me at this point.
Some people can handle 10 cm, some people can't. 10cm on one segment looks weird on some people and on others it looks fine. Hard to say until you've actually started going through the process.
8cm is the accepted "safe" amount to lengthen on femurs and I personally wouldn't go past it unless you have really long tibias or something.
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