There's no reason you can't come back as strong or stronger than before if you do things correctly. Jim Hoskinson completely tore both quad tendons and came back to squat 1100+ in competition.
First, make sure your range of motion is good and you don't have excessive scar tissue in the area. Some ART or deep tissue massage could help if you have too much scar tissue in there.
Work back slowly and don't try and gain back your old strength too fast. Also, make sure your technique doesn't put excessive strain on the quads. So make sure your knees don't travel forward when you SQ and push your knees out and sit back. This will put a larger portion of the load on the hamstrings, glutes, and hips so the quads don't have to handle the entire load. Also, SQ to below parallel, but avoid the super-deep stuff. I would also stretch the quads regularly.
So in summary, work back slowly, adjust your SQ technique if needed, stretch, and take deload weeks occassionally so you don't end up injured again.