How to repair brokem toliet flg on concrete floor?

I broke the toliet flg taking off the old toliet set on a cement floor. I broke the piece were the tie-down bolts go and hoping I don't have to bust up cemrnt and replace flg and closet bend.

My first thought was to use a toliet that son't use the tie-down holes but rather bokt to the floor. Unforunatly I already have a toliet that use the tie-downs.

I am putting a tile floor in so it needs to be rasied some anyway. So my second thought is to glue/bolt a flg spacer on top. I guess I would have to drill tru the old fld and put anchors in the concrete. I will try to atach a pic to show.

Can any one gie me any adxice or a better plan. Thank You for your yime and help.

DRB

They make repair rings designed specifically for this. A quick search of the forum using the search function should get you a picture. If you are going to tile the area and the flange needs to be raised, you could use a spacer. Or, you could bust up the concrete and install an new flange.