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Hard palate defect repair by using haired angularis oris axial pattern flaps in dogs.

Nima Nakahara¹, Katherine Mitchell¹, Rod Straw^1,2

¹Brisbane Veterinary Specialist Centre, Brisbane, Queensland, Australia.

Veterinary Surgery : VS

|May 27, 2020

Summary

The haired angularis oris axial pattern flap (HAOF) successfully repaired large hard palate defects in dogs. This technique offers a viable surgical option for complex oral reconstructions.

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Area of Science:

Veterinary Surgery
Oral and Maxillofacial Surgery
Reconstructive Surgery

Background:

Large defects in the hard palate can be challenging to reconstruct.
The angularis oris artery is a potential source for axial pattern flaps.

Observation:

A haired angularis oris axial pattern flap (HAOF) was utilized for reconstruction in an anatomical cadaver study and three dogs with hard palate neoplasia.
The flap, incorporating skin and buccal mucosa, was rotated on the angularis oris artery, with the haired surface oriented orally.

Findings:

Reconstruction was feasible for defects extending to the maxillary canine tooth.
One dog showed complete healing without complications for over 600 days.
Minor dehiscence occurred in another case, but without long-term issues.

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One dog experienced temporary respiratory obstruction post-surgery.

Implications:

The HAOF is a viable option for reconstructing large caudal and central hard palate defects.
This technique provides an alternative for complex oral reconstructions in veterinary medicine.