Yeah, that happens. It shouldn't, but it does. You should check the grease seals on those balljoints every time you do an oil change. Ignore this step at your own risk.
AFAIK all the "later" cars sold in the USA have the non-replaceable balljoints.
Now Euro spec car were very, very different in many respects (some had non-vented front rotors, right?) and since you have a 4 cylinder 124 it's possible that it uses the older style LCAs.
I've never put the 2 different style LCAs side-by-side to compare them but here's a pic of a 1988 LCA with a recently replaced balljoint:
AFAIK all the "later" cars sold in the USA have the non-replaceable balljoints.
Now Euro spec car were very, very different in many respects (some had non-vented front rotors, right?) and since you have a 4 cylinder 124 it's possible that it uses the older style LCAs.
I've never put the 2 different style LCAs side-by-side to compare them but here's a pic of a 1988 LCA with a recently replaced balljoint: