Dr Paley used to reccommend safe limit in tibias as 6.5cm

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https://paleyinstitute.org/centers-of-excellence/stature-lengthening/the-precice/#/

"The total height gain with two lengthenings is as high as 14.5 cm (8 cm in the femurs and 6.5 cm in the tibias). Greater length is not as well tolerated in the tibia and Dr. Paley highly recommends not to exceed 6.5 cm in the tibias, as it can lead to serious complications."

How long until the current 8cm femur is safe limit drops as well?

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Quote from: FormerKidd on January 12, 2021, 06:59:35 AMNot likely to happen any time soon.

Why do you think that is? You did 6.5cm what was your reasons for not pushing for the 8cm?

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Quote from: ghkid2019 on January 12, 2021, 07:18:53 PMOne year Gap let's you stretch out everything with time and it'll be very doable so the concern at that point if you space two surgeries apart will shift to whether you are fine with the proportions provided by 8cm Tibias

The whole 8cm tibias in two 4cm lengthenings needs to be explained way more. So over 5cm and it's a hard stop according to Paley yet 8cm split is ok. The soft tissues and tendons don't get naturally longer they are still stretched out just the same. What mechanism makes 8cm ok if split?

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Quote from: Medium Drink Of Water on January 13, 2021, 05:06:17 PMNone that I'm aware of.  Just do your 8 cm if you want 8 cm.

Formerkidds point makes sense that doing 8cm split into 4cm each gives muscles a chance to recover but ultimately your ligaments and tendons don't get any longer they just stretch so your going to have the same issues on tibias anyway.

Does anyone know any diaries where anyone has done 8cm tibias with Paley split into 4cm lengthenings?

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Quote from: MakeMeTallAF on January 14, 2021, 03:20:17 AMThis is wrong! Look up distraction osteogenesis in limb lengthening. Yes your soft tissues do stretch, however they also grow due to the mechanical stretching force, similar to how your soft tissues get longer during your growth spurt in puberty.

The reason why its better to split 4 cm and 4 cm a year apart is so that the soft tissues have time to actually grow. Remember soft tissues don't grow as fast as bone, and a distraction rate of 0.5mm/day to 1mm/day is way too fast for your soft tissues to keep up. This can cause nerve damage or scarring/fibrosis.

Do your research before spreading misinformation please!

In all of cyborg4lifes interviews with Doctors from Paley to Lee they all said the bone can be lengthened much further than soft tissue due to limits with the tendons and ligaments having fixed amount of stretch in them. I can't find any information which shows that ligaments and tendons will grow and not stretch. Can you link any sources.

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Quote from: MakeMeTallAF on January 14, 2021, 06:05:00 AMhttps://link.springer.com/chapter/10.1007/978-1-4471-0691-3_4

The soft tissues are the limiting factor because like I said they don't grow fast enough to keep up with the lengthening of .5 to 1mm/day. Paley himself has said the soft tissues grow as well.

"   Ilizarov in 1951 began developing his methods of “distraction osteogenesis”. He developed the process of new bone (termed regenerate) and soft tissue regeneration under the effect of slow and gradual distraction. Gradual traction on living tissue creates stresses that can stimulate and maintain the regeneration and active growth of certain tissue structures, termed the “law of tension stress” (Ilizarov, 1989; Paterson, 1990). "

Seriously look up distraction osteogenesis. It is the process being used in limb lengthening. Study up on it, and rewatch the Rozbruch and Paley interviews they mention it briefly too.

Thanks for the source. My understanding that the 0.75mm per day tibia and 1mm per day femurs was the speed which was meant to prevent preconsolidation. People then get contractures from the muscle being lengthened too fast at these speeds and creating scar tissue rather than regular tissue. If we could lengthen without the worry of preconsolidation the only concern would become remaining proportional as soft tissue issues are then removed. Is there something I'm missing here?