Intraoperative acetabular fractures don't happen very often. In fact, a study from Mayo clinic found only 21 fractures out of more than 7,000 patients. Long-term studies of these patients aren't available yet. The first results are short- or mid-term with follow-up from two to 10 years.
It appears that small or nondisplaced fractures do not affect the life of the cup. X-rays can show if your cup is stable, hasn't moved, and isn't showing signs of wear or loosening. If none of these problems occur, you can expect the standard 10 to 15 years of good use from your implant.