Okay, As we know, it's recommended to stay within the limit of 5 cms when lengthening the tibia, due to ballerina foot.
what some surgeons will do is what Me and my friend bodybuilder on the forum faced,
Our surgeon lengthened our achilles tendon, which did get our foot to 90 degrees but guess what? we can never run, jump or sprint again.
Why did that happen? Idk the scientific terms for it but once you lengthen the achilles tendon of an adult, it will never heal, Becomes elongated and you lose ALL your power to push- off the ground.
The reason why I'm writing this is because I had to go in and get my achilles tendon shortened by another surgeon and had to actually reverse achilles lengthening, which Very few surgeons in this world would do, because none of them understand your issues.
What do you learn from this post? Don't lengthen your tibias to the point your ankle starts getting tight.
Now you will say , 'What if i already have equinus now what can I do?'
You can ask your surgeon to put on an external fixator and stretch your foot gradually out of equinus.
but DO NOT let ANY surgeon , Lengthen your achilles because that will be the end of your push off
and
I think if you go to a good surgeon in the first place, this won't happen.
Good luck and cheers !