Periurethral injection of silicone microimplants in the treatment of urinary incontinence due to sphincter deficiency; [Injection périurétrale de microparticules de silicone dans le traitement de l'incontinence urinaire par insuffisance sphinctérienne]

Objective : To assess the mid-term efficacy of periurethral injection of silicone microimplants in women with urinary incontinence due to intrinsic sphincter deficiency. Material and Methods : Between July J992 and March 1999, 25 women (mean age 65.17 ± 13.5 years) with intrinsic sphincter deficiency underwent periurethral 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 weeks, 3 months, 6months, 1 year and 3 years, respectively. Post-operative maximum urethral closure pressure was significantly increased (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 periurethral silicone microimplants injection remains an effective and safe procedure for women with urinary incontinence due to intrinsic sphincter deficiency.