Although full recovery from arthroscopic surgery may take a few weeks, I was relieved of the pain caused by my torn meniscus immediately after surgery. I was able to walk the day of surgery and was only inconvenienced a few days as all postop patients need some rest to recover from the trauma of invasive surgery.
Each cryogenic liquid has its own specific properties but most cryogenic liquids can be placed into one of three groups: 1  Inert Gases: Inert gases do not react chemically to any great extent. 2  They do not burn or support combustion. 3  Examples of this group are nitrogen, helium, neon, argon and krypton.
This is because as the water hits the hot pan, there is some vaporization of the liquid drop which creates a cushion of gas below the drop. This gas cushion can actually suspend the water droplet and cause it to skitter around the pan. Gas doesn't conduct heat as well and so it doesn't evaporate as quickly. So in the case with liquid nitrogen, it is possible that you could get that protective layer of nitrogen gas between you and the liquid nitrogen.