I never had (fortunatelly and with lots of luck too) an accident with bone breaking, shattering or muscle twisting results that obliged me to use crutches.
They look unconfortable, very hard to use, and limits a lot what you can do and where you can go.

Freedom Leg is a new idea that came to make things less difficult and more intuitive when you get involved in an accident and need a little help to get around while recovering from your wounds.
Questions are raised as to how confortable it is, and how putting all the stress on your upper leg would actually feel. But I guess if you don’t have to use it all day long, looks like a good alternative to crutches…

Source: Gizmodo