Facial nerve repair with tissue adhesive

Area of Science:

• Veterinary Surgery
• Neurology
• Biomaterials

Background:

• Facial nerve injuries can lead to significant functional deficits in dogs.
• Suture repair with a Silastic sheath is a common, successful method for nerve regeneration.
• Novel biomaterials are being explored to improve surgical outcomes.

Purpose of the Study:

• To compare the efficacy of a tissue adhesive (Histoacryl) versus suture and Silastic sheath repair for transected canine facial nerves.
• To evaluate functional and microanatomical outcomes following two distinct nerve repair techniques.
• To determine the time and ease of performing each surgical method.

Main Methods:

• Canine facial nerves were surgically transected and repaired using either Histoacryl tissue adhesive or suture with a Silastic sheath.
• All repairs were performed under surgical microscopy.
• Success was assessed by observing muscle reinnervation via electrical stimulation and evaluating microanatomical continuity histologically.

Main Results:

• Both the Histoacryl adhesive and the suture/Silastic sheath methods yielded statistically comparable results in nerve repair success.
• Sequential analysis was employed to determine the necessary sample size for statistical significance.
• The Histoacryl method demonstrated greater ease of application and reduced surgical time.

Conclusions:

• Histoacryl tissue adhesive presents a viable and efficient alternative to traditional suture techniques for canine facial nerve repair.
• The ease and speed of the adhesive method may be advantageous in clinical settings.
• Further research could explore long-term functional outcomes and broader applications of this adhesive in veterinary neurosurgery.