The triangle of Viborg (Trigonum viborgi) and its anatomical relationships in the normal standing horse.

The research article discusses the anatomical details of Viborg’s triangle in horses, a region crucial for performing parotid duct surgery, and how its size and form are affected by the movement of the horse’s head and neck.

Overview of Research

• The study provides a comprehensive overview of the anatomical aspects of Viborg’s triangle (Trigonum viborgi) in horses, named after the surgeon who identified it. This region, located in the head of the horse, is enclosed by the mandible, linguofacial vein, and the tendon of the stylohyoideus muscle.
• This area is significant as it is the site for parotid duct and guttural pouch surgery or access. Detailed knowledge of the anatomy in this region is thus crucial for veterinarians as improper surgical interventions can lead to important postoperative complications.

Structures of Viborg’s Triangle

• The research provides details of the structures that form the borders of Viborg’s triangle and those contained within and around it. The mandibular bone, the linguofacial vein, and the tendon of the stylohyoideus muscle define the triangle’s limits.
• The structures within the triangle include various vital components such as the parotid duct, the facial nerve, and part of the maxillary artery.

Influence of Head and Neck Movements

• Further discussed is the effect of the horse’s head and neck postures on the structure of Viborg’s triangle. This is important because changes in the head and neck posture can transform the shapes and dimensions of the anatomical structures within the triangle.
• The research depicts how head and neck movements can modify the placement and prominence of these structures, a crucial consideration during surgical procedures.