Don't know about shock waves, no. When I had tendonitis in the achilles, my p.t. advised me to invest in a pair of very high heels (of all things). Teetered around on those for a couple of weeks while the achilles healed. Apparently the tiptoe position means you're keeping your achilles compressed and immobilized, which helps, just as long as you don't topple over and sprain your ankle. Anyhooooo ... good luck, get well quick, and let us know how the s.w.t. works.