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[Robert Adam]

If you lengthen the femur by 8 cm and the tibia by 5 cm, (8+5), how much will you actually grow? How much less than 13 cm?

[shortisnotfun]

If you lengthen the femur by 8 cm and the tibia by 5 cm, (8+5), how much will you actually grow? How much less than 13 cm?

Exactly 13cm you will grow.

[we.live.once]

Exactly 13cm you will grow.

in reality,  most people at the end will have less than they have lengthened.
The wayof your removable is different to most of the other patients. And you have only lengthened 5cm with your tibia

[shortisnotfun]

in reality,  most people at the end will have less than they have lengthened.
The wayof your removable is different to most of the other patients. And you have only lengthened 5cm with your tibia

I don't think so, you usually gain whatever you lengthen unless the x-ray is wrong or you have some residual tightness. Have you done LL ?

[we.live.once]

I don't think so, you usually gain whatever you lengthen unless the x-ray is wrong or you have some residual tightness. Have you done LL ?

Of course, and I know your screaming, bro 

[shortisnotfun]

Of course, and I know your screaming, bro 

Huh

[we.live.once]

Huh

baby scream 
sorry, I am bad 

[Medium Drink Of Water]

The femur is lengthened along the anatomical axis rather than the vertical axis.  You'll get 100% of your new tibia length added to your new height.  There's a formula I don't know for how much height you gain from femurs.  I'm pretty sure you can find it on the internet somewhere.

[Sigma]

The femur is lengthened along the anatomical axis rather than the vertical axis.  You'll get 100% of your new tibia length added to your new height.  There's a formula I don't know for how much height you gain from femurs.  I'm pretty sure you can find it on the internet somewhere.

Exactly. The femur bone is curved.

[Robert Adam]

L - L*(1-cos α) = height

at 8 cm you lose about 3 mm

[lovinglonglegs]

L - L*(1-cos α) = height

at 8 cm you lose about 3 mm

What does the variable stand for?
i guess
L=lengthening amount
a = ?? the angle made by the slanted degree of femur and horizontal knee line?

is there name for that formula?

[DanishViking]

I wish people would just search for answers and posts on this forum before making a new one asking a question that have been answered 1 million times...