Limb lengthening concerns

So I’m a 5’3 (160cm) male and I’m 31 years old, I’m a sports guy, love doing miau Thai, cycling and football, the thing that worries me the most apart from weird body dimensions is to never be able to fully sprint or have athletic reflexes and movements. I would be doing a femur lengthening since tibias seems pretty weird to me, I would aim for the 8cm lengthening. So if someone has some comments on how they were able to go back to sports and at least be normal, that would be reassuring.

Thanks!!!