Be patient, they're working on it. https://www.pennmedicine.org/for-patients-and-visitors/find-a-program-or-service/penn-orthoplastic-limb-salvage-center/limb-lengthening/get-taller-with-penn-medicine/the-taller-procedure This process appears in a fantasy novel I am at work on, where increased height is a reward given you by the government. It is painless and you gain status. If you are a criminal or enemy of the state, you are made shorter, in a very painful procedure.