As long as your rectal sphincter muscles are intact (which they should be if you still have your rectum) and they are working okay, you can be reconnected.
If you haven't been doing any sphincter muscle exercises, start now! Squeeze those muscles down below 2, 3, 4, release 2, 3 4. They're going to be extremely out of shape after all these years which means that without you toning them up, they're not going to work effectively and hold stool for you until you want to go, ie in other words, you'll probably be incontinent.
Start those exercises today (however, remember there are no guarantees)!
I have had an ileostomy for 33 years now due to UC.
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I'm not a complete idiot - some parts of me are missing!