Hi Jesus fan.
As you begin to regain your strength and flexibility in your hip joint, you should be able to eventually return to full daily activity which can include situps.
The timeframe of your healing and strengthening process may differ from that of another patient --
This was in my PTs information... The Vanderbilt Medical Center suggests that patients can return to full activity roughly 12 weeks after the procedure.
Can, doesn't mean you should. I err on the side of caution and there are probably some safer core exercises.
Just my opinion.