Hi Nich,many thanks yes is_a bit twingy was pushing a wheelbarrow loaded with large branches down wet grassy slope when I slipped and think the falling barrow and my rising leg collided when I eventually got the attention of my wife she said are you sure its broken but thought the fact that my knee was upright and my foot was at 90 degrees to it to was perhaps an unnecessary question but have to say hospital food is really quite good!