By Deborah Westergaard, M.D. Dallas | Regen Experts Dallas & Plano If the Nerve Carries the Pain, Should We Treat the Nerve with Hydrodissection for Knee Pain —or Find Out Why It Is Hurting? Hydrodissection has become an increasingly discussed treatment for chronic knee pain. Using ultrasound guidance, a physician carefully places fluid around a nerve to separate it from surrounding tissue. When a nerve is irritated, entrapped, or restricted by scar tissue, hydrodissection ma