Percutaneous Tibial Nerve Stimulation (PTNS) is a non-surgical way to deliver neuromodulation similar to sacral neuromodulation. A thin acupuncture needle is inserted near the ankle, close to the posterior tibial nerve, and is then connected to a small electrical stimulator. Then mild electrical impulses travel up the nerves in the leg to the nerves that control the bladder and pelvic floor. We can then observe the body's response to determine the ideal level for nerve stimulation. Most women initially receive 12 weekly, 30-minute treatments. Some patients will go on to receive occasional further treatments, usually once per month for 30 minutes. The treatments are extremely well tolerated with no significant side effects.