 I don't know how else to explain it. It basically exploded, and I had paralyzing pain for weeks on end. This happened several times until QC Kinetics came to town, and they put an end to that. And I haven't had a single twinge out of my sciatic nerve in more than two years. Wow. Thanks to QC Kinetics, the nation's leader in advanced regenerative medicine. I haven't used that cane in two years either, by the way. I still have it. It's collecting dust.