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[Ktenom]

I'm new to this forum but I have been looking into limb lengthening for years now and I have a question. How much could I lengthen my legs before things look awkward? I know that arm span plans a role but right now I am more focused on the upper/lower body ratios before that, as I can lengthen my arms later if the need arises. I don't know how to make a good mock-up so I can't really see what I would look like.

I am 5'4-5'4.5 (163-164 cm)
Sitting height is 34.5 inches (~87.6cm)
Inseam (crotch to floor) is 28 inches (~71cm)

I plan on doing 4-5 inches (10-12 cm) in total, split up between my femur and tibia. I'm only 18 and am about to enter college so I won't get anything done for at least 5 years, but as I'm probably done growing I may as well plan for the future.

What do you guys think? Is 4-5 inches reasonable? Can post a picture of myself if necessary

[sered22]

You will be on the longer leg side but still within normal range. 87.6/174 cm = 0.50 sitting height ratio

I can help u with mockups if you want

[AnotherLLer]

10% of original bone length which should be 7-8 cm max with quadrilateral (3.5 cm tibia and 4.5 cm femur). If you want double that amount, you have to re-break both segments and do the same amounts again but you'll look comical 100%.

After 8 cm total it's not only leg-to-body ratio that will start to look off but more importantly, your arm length will look t-rex level next to other men at your final post LL height.

Moreover, chances of misalignment, bad alignment or non-union increases dramatically if you go past 4 cm on tibia and 5 cm on femur in one go.

Soft tissues are another problem with overlengthening so, basically, there are tons of issues and risks invovled if you lengthen huge amounts in one go.

And, humerus lengthening, while being an option, won't look good unless your forearm:humerus ratio is off. Your forearm will look comical and your arm biomechanics will be off. If there was forearm lengthening like there is tibia lengthening, than, cosmetic arm lengthening would be a viable choice after massive LL, but, unlike with legs where you can lengthen both segments in order to preserve interlimb ratios and biomechanics, you can't do the same with arms as there's only humerus lengthening possible.

So, if you value proportions and recovery, don't go above 3 inches (3.5 cm in tibia and 4.5 cm in femurs).

[Ktenom]

I think in all likelihood I'll do 4 inches (10cm), as I'm fine with having longer legs. Also, it turns out my forearms are a bit longer than my humerus, about 2 inches. My wingspan is the same as my height, so even if I add 2-3 inches to my humerus it should be within the normal range.

Frankly I'm fine with giving up some of my athletic ability, given I'm not an athlete, although I will do my best at PT and securing an experienced surgeon, like Dr. Assayag or Dr. Rozbruch as they are the closest to me.