I am not sure if this a troll post, but either way I’ll take the bait. I am nearly 8 years post femur lengthening and I go on intense hikes multiple times a week as my primary form of exercise (this is easy to do living in a very mountainous part of California lol). I would say that of the friends I go with who are also in their late 20s/early 30s, I can walk/hike way faster and with a lot more endurance. Running/sprinting wise, I would say I am probably average for my age range. Jumping wise I am pretty good. I haven’t really tested myself playing explosive sports against athletic guys my age, sometimes when I make explosive movements I still feel my rods or at least the upper screws in my hips. Getting those removed in December.
My walking gait does look a little strange. I out-toe pretty severely due to excessive tibial torsion. I think the gait got worse since my femur surgery, since maybe I lost some of my ability to compensate for the deformity. I think I still have some residual glute weakness but my quads and other muscles are pretty strong.
So to summarize. Function can return to normal even if gait looks a little off, especially if you do LL with an undiagnosed congenital deformity on another bone segment