Make sure you don’t have a compressed disc in your lumbar spine. This is done through an orthopedic surgeon. If so, ultrasound won’t help at all. If it’s really a neuropathy, then try increasing your intake of B12 and iron. That did it for me after years and years of annoying pain. I had surgery with all the bills and whistles, and it was great, but my nerves from my mid thigh to the top of my foot were damaged permanently and I have neuropathy because of it. Adding extra exercise on a stationary bike every day really helped, and then adding two eggs, bisglycinated iron pill, and B12 help relieve the neuropathy. Now I only have a little bit, but it’s very tolerable compared to what I had.