Q. A 34-year-old woman who was diagnosed with Morton neuroma in the third intermetatarsal space of her right foot, based on clinical and MRI findings, three months ago, returns to your office with continuing right foot pain. You treated her with a metatarsal pad, wide-toed shoes, and strengthening exercises for intrinsic foot muscles. She mentions that although she obeyed your prescription, she still has disturbing forefoot pain in the third intermetatarsal space and numbness in the third and fourth toes. The right forefoot has no skin lesions, swelling, or deformities on physical examination. Palpation of the third intermetatarsal space between the metatarsal heads is tender. Squeezing the forefoot mediolaterally causes pain and a palpable click. The physical exam of other parts of the body is not significant. What is the best plan for her now?