International Urogynecology Journal

, Volume 14, Issue 4, pp 239–243

Mechanical properties of urogynecologic implant materials

Authors

    • Royal Hospital for Women
  • P. Vancaillie
    • Royal Hospital for Women
  • M. Svehla
    • Orthopaedic Research LaboratoryPrince of Wales Hospital
  • W. Walsh
    • Orthopaedic Research LaboratoryPrince of Wales Hospital
  • A. B. Steensma
    • Royal Hospital for Women
  • T. G. Vancaillie
    • Royal Hospital for Women
Original Article

DOI: 10.1007/s00192-003-1041-8

Cite this article as:
Dietz, H.P., Vancaillie, P., Svehla, M. et al. Int Urogynecol J (2003) 14: 239. doi:10.1007/s00192-003-1041-8

Abstract

Synthetic suburethral slings have recently become popular despite the risk of erosion commonly associated with synthetic implants. Some of these materials seem to have unexpectedly low erosion rates. Based on the hypothesis that erosion is due, in part, to biomechanical properties, we undertook an in vitro study. The biomechanical properties of eight non-resorbable synthetic implant materials, stiffness (slope, N/mm) and peak load (N) were determined from load vs. displacement curves. Open-weave Prolene mesh showed unique biomechanical properties compared to other tested materials. The tension- free vaginal tape had the lowest initial stiffness (0.23 N/mm), i.e. low resistance to deformation at forces below the elastic limit, whereas the stiffest implant tested, a nylon tape, reached 6.83 N/mm. We concluded that the TVT and other wide-weave Prolene tapes have unique biomechanical characteristics. These properties may be at least partly responsible for the apparent clinical success of the implants.

Keywords

BiomechanicsImplant materialsIncontinence surgeryProlene meshStiffnessTVT

Copyright information

© International Urogynecological Association 2003