Goalkeepers are Crazy!

Both of my knees are shot and I have to go into hospital shortly, to have the gunge cleared out. This has come about after years of pretending to be the great Lev Yashin, which of course I wasn't.
The consultant, who is not a football man, said if you must be a goalie then when you leap up to tip a save over the bar don't land on your knees but do a single twist and land on your arse. This, apparently stops the knee damage.
Goalies of the world, are you listening?
Gordonsaves