my 2nd baby, 1st homebirth, came out OA, the shoulders gave me labial skid marks on the way out, the rest of them (5 more) did restitute just fine.
My d-i-l's kids all came out already restituted before the head was born, so the kids were facing her left thigh! We think that has somethng to do w the shape of her pelvis.
Even my largest, (9 - 11), came out w such a round head, you'd think she was sectioned!