Curious (and I understand if you think it is too personal to answer) are you looking to get a knee replacement for arthritis? I have been looking into gel shots, Hyaluronan injections or Viscosupplementation injections. I just do not want to undergo another knee surgery, I have my SIL looking for info in the DR. My ortho surgeon in the USA thinks the injections may be the way to go for me.Two hours there, two hours back on roads that make me carsick. I considered it, and even met with an excellent surgeon, but it's too much.