Fiction is very good at exploring "what if one thing was different?" scenarios, but worldbuilding all the implications that come from even one difference is almost impossible.
What kind of prosthetics are possible, and what will forever remain magical thinking? Would these likely even be replacing, e.g. organic legs with robot legs, or will we prefer to genetically engineer — either in vivo or as a sequence of [in vitro, culture, 3d bioprint, transplant]? Will this mean an end to wheelchairs? Or cause IRL furries? How does this impact DNA as a source of identity in law? Will military prosthetics count as hidden weapons?