Periurethral injection of silicone microimplants in the treatment of urinary incontinence due to sphincter deficiency.

Objective : To assess the mid-term efficacy of periurethral injection of si licone microimplants in women with urinary incontinence due to intrinsic sp hincter deficiency Material and Methods : Between July 1992 and March 1999, 25 women ( mean ag e 65.17 +/- 13.5 years) with intrinsic sphincter deficiency underwent periu rethral injection of silicone microimplants. Urodynamic investigations were performed prior to and after surgery The subjective degree of continence was also assessed for 3 years. Results : Subjective success rate were 80%, 72%, 65%, 60%, and 60% at 6 wee ks, 3 months, 6months, 1 year and 3 years, respectively. Post-operative maximum urethral closure pressure was significantly increase d (post-op 32.35 +/- 18.04 cm H2O versus pre-op 23.68 +/- 9.4 cm H2O; P < 0 .01) No serious operative or postoperative complication occured. Conclusion. In spite of time-dependent decrease in success rate periurethra l silicone microimplants injection remains an effective and safe procedure for women with urinary incontinence due to intrinsic sphincter deficiency.