I think it can be as easy or as hard to find a partner or maintain a relationship as it is with any other physical problem. I know that a dissection can cause problems in martial life. But so can a lot of other things.
I was very lucky to have a husband that really wanted me to stick around in a life with him. I am sure it hasn’t always been easy. After such a traumatic surgery, a partner has to take on the roll of nurse, cook, housecleaner etc. for awhile. My husband did a great job and never acted like this was a chore. He even stayed in my hospital room when they would let him. At Hopkins, he was in the ER room with me for over three months. They wouldn’t let him stay at the physical therapy place as rooms weren’t private. Once we were home, friends helped out so he could get some breaks. I don’t think he has ever resented our life. But, as I said, I am lucky. So many spouses would tire of all this. That would be devastating to someone who was trying to recover.