Taz2, my ovaries kept on chugging away full force for a further 8 years after my hysterectomy. My Consultant was astonished! Of course, they are gone now.
Maybe the gel would suit you better as MaryG says? Oh, how I wish it could work for me! I'd be back on it like a shot (I'm hoping to achieve the transition off the blinkin' oral method at some point as soon as, but I need to get SOME stable level of hormones in for at least a while before I try the switch).
I know my Menopause Consultant (NHS and he's listed in the directory here on MM), favours the gel over patches as he says the patches usually cause some problems with consistent delivery. He's pretty knowledgeable about all the different types too. He says the Estradot, in his opinion, IS the most consistent if a patch route is desired (smaller 'footprint', less chance of wrinkling, less skin irritation).