A lot of guys shoot layups off one foot and that has never hurt them.  I think Step Backs have been around a long time too.  So I think that should be taken out of commission and Jack Sikma would have never had a career.

Maybe the the decel steps and eurosteps but logic dictates they would have a massive history of these injuries in Europe.  One would think the Eurostep would be harder on the knees.   I think it is decel step could really stress the achilles.  But on the other hand a lot of these are guys lunging and stepping back.   We called that the Jab step when I played.  I think the modern guys over emphasis the jab too much and extend too far.