Went to dr bigler with two aching knees. He suggested injections. Had a series of three injections in each knee. The pain was gone for about four months. When it came back I went back in and he suggested that I try another series. The right knee is complete and they are working on the left. Pain is gone. Dr bigler and all of his personnel have been outstanding. I especially would highly recommend Dave the injector. Real nice guy and little or no pain.