Explaining Biology on Instagram: "How a Single-Rod Implant Is Inserted Under the Skin Preparation The healthcare provider cleans your upper inner arm and marks the exact spot for insertion. Local Anesthesia A small amount of numbing medicine is injected so you don’t feel pain—just slight pressure. Insertion Using a special applicator, the provider slides the flexible, matchstick-sized rod just under the skin (not into muscle). Check Placement The provider gently feels the area to confirm the imp