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[RealLostSoul]

Hey so another 2 thoughts about possible complications. I was wondering, with femur LL, what nerves are causing the most trouble and in which parts of the body?

1. I was thinking about the potential risk of permanently losing sensation. If you think about it, arm lengthening for cosmetic purposes is a joke as losing sensation in your hands and arms is much more devastating than if you'd lose it in your ancles or shin (and unjustified if you literally just make your arms 5cm longer which doesn't improve any functionality and is not worth it cosmetically). With humerus lengthening the radial nerve for example lays close to the bone which could be compressed, eg. one user on the old forum did discrepency lengthening in his humerus, needed nerve release and had permanent sensation loss and a huge scar from the nerve release surgery (he did it with Paley so it was not with a bad doctor too).
However, even a PERMANENT loss in "useless" regions such as ancles, shin, etc. with leg lengthening is unacceptable imo (but obviously less dramatic than reduced nerve function in your upper extremeties).

2. Could numbness in the pelvic or genital area occur as well due to LL or would damage to the nerve always be distal to the osteotomy (meaning below the cut)? Did anyone here have nerve problems ABOVE the osteotomy aka in the pelvis/genitals/hips?
For the genitals especially, after doing some research, I found out most nerves (sacral spinal nerves) shouldn't be stretched from LL (so no risk there) except maybe the genitofemoral nerve which innervates your balls (in males). Is this nerve at risk?
Plus maybe the sciatic nerve could lead to some problems in the pelvis.
However, all of this only applies if the nerves become damaged by stretching ABOVE the "distraction spot" aka the osteotomy side. Or in other words, if the nerve is stretched, does it lose function in the distal part or does it lose function overall and in every branch due to intense stretching?
If they just lose function below it the risk of losing sensation in your genitals is inexistent.
What do you guys think?

[Serilium]

idk femur but for tibia it is the peroneal nerve (nerve that control foot muscle) and if damage result in drop foot

[Going-For-Three]

I've never heard of anything being damaged other than the common peroneal nerve.

[RealLostSoul]

Do you guys know if the nerve gets damaged, is it just on the lower ends of it or is the whole nerve branch generally affected due to the stretching?

[RealLostSoul]

bump, found this picture . I think it highlights the nerves pretty well. So genital innervation issues / sxxxual dysfunction due to nerve damage shouldn't really happen with LL if I am correct.

Especially pudendal is important for that and I don't see how this thing can be damaged by distraction or the surgery itself...

[MakeMeTallAF]

Even if you do lose some sensation/conductivity, there is a ton of research going on in nerve regeneration so that in 10-20 years we may be able to regenerate these nerves.

I'm not too concerned about this but the best thing is probably lengthening as slow as possible and not more than 5 cm if you want maximum nerve health.

[RealLostSoul]

Even if you do lose some sensation/conductivity, there is a ton of research going on in nerve regeneration so that in 10-20 years we may be able to regenerate these nerves.

I'm not too concerned about this but the best thing is probably lengthening as slow as possible and not more than 5 cm if you want maximum nerve health.

I think once you lengthen you have some damage regardless of the amount, the number 5cm seems arbitrary. Betting on sci fi future stuff is always a ridiculously bad idea tbh. Anyways, the risk benefit should be evaluated. I think losing sensation in your foot or lower leg etc is worth it. It won’t bother you as much as height dysphoria, if you‘d lose penile sensation however it‘s not worth it anymore especially for tiny increases like 5cm. That doesn‘t seem to be the case though so.
Best thing to do is staying under 1mm/day and reporting nerve problems to the doctor.

[Future Skycraper]

I don't know about nerve effects of LL, but I do think that streatching the nerves would only cause pain, and it would get better trhough time, at least with the internal ones. LON and etc could make more nerve demage, but I'm not sure about it. The biggest problems are the muscles, cause of there tendons.

[MakeMeTallAF]

I think once you lengthen you have some damage regardless of the amount, the number 5cm seems arbitrary. Betting on sci fi future stuff is always a ridiculously bad idea tbh. Anyways, the risk benefit should be evaluated. I think losing sensation in your foot or lower leg etc is worth it. It won’t bother you as much as height dysphoria, if you‘d lose penile sensation however it‘s not worth it anymore especially for tiny increases like 5cm. That doesn‘t seem to be the case though so.
Best thing to do is staying under 1mm/day and reporting nerve problems to the doctor.

Not necessarily. Well yes 5 cm is arbitrary but the more you lengthen the more damage is done. Most people don't experience clinically significant nerve issues until they lengthen past 5 cm, but this threshold is different in everybody based on their physiology.

And this isn't really science fiction as nerve regeneration is already being done in pre clinical research. An example is David Sinclair who regenerated the optic nerve using epigenetics. Sure the technology to do it in humans is not here yet, but this is far from sci-fi. I give it 10-20 years for it to make it through trials and everything and be used in practice.

[Future Skycraper]

Not necessarily. Well yes 5 cm is arbitrary but the more you lengthen the more damage is done. Most people don't experience clinically significant nerve issues until they lengthen past 5 cm, but this threshold is different in everybody based on their physiology.

And this isn't really science fiction as nerve regeneration is already being done in pre clinical research. An example is David Sinclair who regenerated the optic nerve using epigenetics. Sure the technology to do it in humans is not here yet, but this is far from sci-fi. I give it 10-20 years for it to make it through trials and everything and be used in practice.

As a gy who did rinoplasty (I had some issues there and took the oportunity to do it 2 in 1) I lost 100% of my nose sensation for some years, and now I can feel it back, but not the same way, and to be honest idgf. Nerver do regenerate somehow, you just need time.