Bambinex teddy is the one I am thinking of - this kind of shows the cut www.fill-your-pants.com/product/10/28/bambinex-teddy-nappy/06422a283f5ae8e1adc49e5a06e58cee.
Sorry I should have checked out one of 'our' sites for them! I wanted a pic quick so just googled.
It is really really high on the leg. It almost doesn't have sides, more of a band. Might be good? You are welcome to a lend of mine to see if it would help.