Bony ossicular fixation using 2-cyano-butyl-acrylate adhesive

Area of Science:

• Otolaryngology
• Biomaterials Science
• Surgical Innovation

Background:

• Ossiculoplastic surgery aims to restore hearing by reconstructing middle ear ossicles.
• Adhesives are explored to provide stable fixation during ossicular reconstruction.
• The biocompatibility and efficacy of cyanoacrylate adhesives in otologic surgery require further investigation.

Purpose of the Study:

• To evaluate the effects of 2-cyano-butyl-acrylate (Histoacryl) on guinea pig ossicles.
• To assess the potential of Histoacryl for achieving bony union in ossiculoplastic procedures.
• To determine the inflammatory response associated with Histoacryl in the middle ear.

Main Methods:

• Surgical implantation of 2-cyano-butyl-acrylate between the incus and its bony fossa in adult guinea pigs.
• Light microscopic examination of middle ear tissues at 3, 6, 9, and 12 months post-surgery.
• Histological analysis to evaluate bony union and inflammatory reactions.

Main Results:

• A durable bony union between the ossicle and its surrounding niche was observed in 11 of 12 operated-on ears.
• Histological examination confirmed successful osseointegration at multiple time points.
• Minimal inflammatory reactions were noted in middle ear regions not directly exposed to the adhesive.

Conclusions:

• 2-cyano-butyl-acrylate (Histoacryl) demonstrates efficacy in promoting bony union of ossicles.
• The adhesive shows promise as a biocompatible agent for ossiculoplastic surgery.
• Histoacryl may offer a viable solution for achieving stable and durable ossicular reconstruction with limited adverse effects.