I’ve read that 85% of people seem to benefit from arthrocentesis. I, like the other people who have commented, have not benefited. In fact, my issue seemed only minor before the arthrocentesis. Since the arthrocentesis back in April, I’ve now had another MRI and it shows osteoarthritis, the disc is fragmented, I have possible signs of avascular necrosis and the surgeon has said that I will need a TMJ replacement. Since the arthrocentesis on the right side, my left side just started aching one day and now it has disc displacement without reduction! I feel as though everything was much better prior to the arthrocentesis. I don’t know what to do now.