Yes, Cariblue, it is physiologically more painful due to the peristent backache and often a premature urge to push. Many babies do rotate to a lateral of anterior position, but some remain in peristent OP position, some are even born this way (that awful term 'face to pubes' ewwww) I was going to do this subject for my essay, but will save it. In my limited experience it is on the increase theoretically due to women's more sedentary lifestyles.
There is increased need for analgesia, especially epidurals, and sometimes instrumental delivery too
Rotational forceps are pretty difficult to watch