Abstract
Sacral neuromodulation is an approved and validated treatment for overactive bladder syndrome, chronic non-obstructive retention, and chronic pelvic pain. Percutaneous tibial nerve stimulation is a less invasive approach of neuromodulation. We performed a literature research to assess the current evidence available about neuromodulation. Both techniques appear to be effective and safe third-line treatments. The overall success rate ranges from 43% to 85% for sacral neuromodulation and from 40% to 79.5% for percutaneous tibial nerve stimulation. Sacral neuromodulation has a higher incidence of complications in comparison to percutaneous tibial nerve stimulation, due to the more invasive surgical technique and the presence of a permanent implant. The incidence of surgical revision ranges between 9% and 33%. The most frequent complication with sacral neuromodulation is pain at implant site (15%-42%), followed by lead migration (4%-21%), pain at lead site (5.4%-19.1%), leg pain (18%), and infection (5.7%-6.1%). The quality of the studies on sacral neuromodulation and percutaneous tibial nerve stimulation in literature is quite modest, because of the shortage of good randomized clinical trial; most of the studies are prospective observational studies with mid-term follow-up.
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