Hello! Yes, I had patellar clunk syndrome that developed at about 4 months post op. At 7 months post op it had not changed at all and I had arthroscopic surgery for lysis of the adhesions at the recommendation of my surgeon. I am now 3 weeks post op. The surgery was much more than I anticipated and I am dealing with a lot of swelling and pain. I cannot tell yet whether the clunk has been relieved because I can’t do the things that made the clunk happen previously- mostly stair climbing. I hope that helps!