• Nazema Y Siddiqui, Cindy L Amundsen, Elizabeth G Corey, and Jennifer M Wu.
• Department of Obstetrics and Gynecology, Duke University Medical Center, DUMC 3192, Durham, NC 27710, USA. nazema.siddiqui@duke.edu
• Int Urogynecol J. 2011 Apr 1;22(4):419-23.

Introduction And HypothesisOur objective was to compare risk of surgical revision after sacral neuromodulator lead migration based on the type of anchoring system.MethodsWe performed a retrospective cohort study of patients receiving sacral neuromodulation over 7 years. We compared surgical revision due to loss of efficacy accompanied by radiographic lead migration in fascial-anchored versus tined leads.ResultsOf 112 patients, 28 (25%) underwent fascial anchoring, and 84 (75%) received tined leads. Within 2 years of implantation, lead migration occurred in 26% of fascial and 10% of tined anchoring systems (RR, 2.25 (95% confidence interval, 0.85-5.93)). Patients with fascial anchors were followed for a longer period of time. Therefore, Kaplan-Meier curves were compared showing no difference in risk of lead migration (p = 0.09). Four of eight (50%) lead migrations in tined leads occurred within the first 3 months after implantation.ConclusionsTwo years after sacral neuromodulator implantation, lead migration is similar between fascial-anchored and tined leads.

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