Intralaryngeal thyroarytaenoid lateralisation using the Fast-Fix 360 system: a canine cadaveric study

Area of Science:

• Veterinary Surgery
• Laryngology
• Surgical Innovation

Background:

• Laryngeal paralysis reduces the rima glottidis cross-sectional area due to arytenoid abduction failure.
• Current surgical treatments for laryngeal paralysis often involve invasive lateral or ventral approaches to the larynx.

Purpose of the Study:

• To evaluate a novel, minimally invasive intralaryngeal thyroarytenoid lateralization technique.
• To assess the efficacy of the Fast-Fix 360 meniscal repair system for this procedure.

Main Methods:

• Canine larynges from large breed cadavers were used for ex vivo study.
• A simplified insertion angle of 70° was employed for intralaryngeal placement of the Fast-Fix 360 system.
• Thyroid penetration and rima glottidis cross-sectional area were measured pre- and post-procedure.

Main Results:

• The Fast-Fix 360 system, inserted intralaryngeally at 70°, achieved successful thyroid penetration in all specimens.
• A significant increase in rima glottidis cross-sectional area was observed (P<0.0001).
• The mean percentage increase in area was 125.96%.

Conclusions:

• Intralaryngeal thyroarytenoid lateralization using the Fast-Fix 360 system effectively increases rima glottidis cross-sectional area.
• This minimally invasive approach shows potential for treating laryngeal paralysis.