i didn't know they was a big difference between the two. i was thinking above the knee would be better as the knee would be equal to the other one. i still have the top knuckle part of knee because i have had a hip replacement and the long stem metal into my bone, so they couldn't get it off higher. i think i'm just kind of in a panic wanting to ride again and it's not looking good. sure would like a right side tank shifter setup for a trike. i gotta learn to walk on this thing first.