I think that the rear end of the ham would taste the same as the rest of the ham ... because the ham is cut from the ass of the pig.
And by the way, if anyone is wondering about Swedish Christmas customs (although it is not likely that many people are), then I can tell you: Yes, Swedish meatballs is as much a must on the dinner table on Christmas Eve as breaded ham and aquavit.
I am a vegetarian, and even I always have meatballs, although mine are made from soy beans. Meatballs are often eaten together with beetroot salad (pickled beetroot in mayonnaise) on Christmas. We also eat red cabbage, and I believe that they do that in Denmark and Norway too.