Torps and porps: a transmission and scanning electron microscopic study

Area of Science:

• Biomaterials Science
• Otolaryngology
• Medical Device Research

Background:

• Plasti-pore prostheses are used in middle ear reconstructive surgery.
• Understanding the long-term biocompatibility and degradation of implants is crucial.

Purpose of the Study:

• To evaluate the fate and biocompatibility of Plasti-pore prostheses in the human middle ear.
• To assess the impact of implantation on the material's physical characteristics and host tissue response.

Main Methods:

• Transmission Electron Microscopy (TEM) and Scanning Electron Microscopy (SEM) were employed.
• Analysis of eleven Plasti-pore prostheses explanted after 7 to 34 months in vivo.

Main Results:

• Plasti-pore demonstrated a low foreign body reaction and maintained physical integrity.
• Evidence of micro-disintegration was observed within the prostheses, indicated by giant cell infiltration.
• Micro-disintegration did not significantly alter the prostheses' physical properties or clinical efficacy.

Conclusions:

• Plasti-pore exhibits good biocompatibility in the middle ear environment.
• While micro-disintegration is present, it appears not to compromise short-to-medium term clinical outcomes.
• Further investigation is needed to determine the long-term performance and degradation profile of Plasti-pore implants.