Every effective medical treatment has side effects and complications. In the use of voice prostheses too, we are also aware of a range of typical problems and complications. Corresponding procedures for managing complications have been developed. The most common problem affecting a voice prosthesis – in 86% of cases – is leaking. At just 14%, actual speech problems are quite rare. Problems with leaking usually occur transprosthetically. The rate of leakage around the voice prosthesis (periprosthetic) is 13% - 27% (1, 2).

In order to make a specific search relating to a particular problem easier for the user, we have divided complication management into problem areas.

Speech problems

  • Atonal or missing PE segment (very quiet voice)
  • Spontaneous shunt closure (unable to speak)
  • Pharyngeal spasm (almost unable to talk)


  • Loss of the voice prosthesis
  • Biofilm formation
  • Underpressure / material fatigue
  • Shunt insufficiency


  • Granulation
  • Problems with the length of the voice prosthesis
  • Dysmorphal tracheostoma

Special prostheses

Poster special prostheses