Diagnostic imaging of a basihyoid bone fracture and partial avulsion of the medial pterygoid muscle in a horse.
Abstract: A 3-year-old gelding was presented for further evaluation and treatment of a swelling over the left mandible and inability to eat and drink. Radiographs of the mandible were unremarkable. Computed tomography (CT) of the head demonstrated a fracture of the basihyoid bone and partial avulsion of the medial pterygoid muscle. Ultrasound examination was performed to establish a baseline and confirmed the fracture. The gelding was managed conservatively, recovered uneventfully, and was able to return to training after 4 months of rest. Key clinical message: Computed tomography and ultrasonography in the horse provided information about injury to the basihyoid bone and insertion of the medial pterygoid muscle. Diagnostic par imagerie d’une fracture de l’os basihyoïde et avulsion partielle du muscle ptérygoïde médial chez un cheval. Un cheval hongre âgé de 3 ans fut présenté pour évaluation et traitement d’enflure du mandibule gauche et inhabilité à manger et à boire. Des radiographies du mandibule ne montraient rien de particulier. La tomodensitométrie (CT) de la tête a montré une fracture de l’os basihyoïde et une avulsion partielle du muscle ptérygoïde médial. Une échographie fut effectué afin d’établir un seuil de base et confirmer la fracture. L’hongre a été géré de manière conservatrice, a récupéré sans complication, et a pu retourner à l’entraînement après 4 mois de repos.Message clinique important :La tomodensitométrie et l’échographie chez un cheval ont fourni de l’information sur une blessure à l’os basihyoïde et à l’insertion du muscle ptérygoïde médial.(Traduit par Dr Serge Messier).
Copyright and/or publishing rights held by the Canadian Veterinary Medical Association.
Publication Date: 2020-01-02 PubMed ID: 31892753PubMed Central: PMC6909420
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Summary
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This research investigates the use of computed tomography (CT) and ultrasonography to diagnose a basihyoid bone fracture and partial avulsion of the medial pterygoid muscle in a horse.
Diagnostic Process
- The case involved a 3-year-old gelding horse, which had developed a swelling over its left mandible and was experiencing difficulties with eating and drinking.
- The horse was first subjected to radiographs of the mandible, however, these proved unremarkable and no significant findings were derived.
- The next step was to conduct a CT scan of the horse’s head. This showed a fracture of the basihyoid bone and partial avulsion of the medial pterygoid muscle. These findings were crucial as they explained the clinical signs observed in the horse (swelling and eating difficulties).
- For further verification, an ultrasound examination was conducted and this confirmed the fracture diagnosed from the CT scan.
Treatment and Recovery
- After diagnosis, the horse received conservative management. This typically involves rest, pain management, and sometimes physical therapy.
- The horse was reported to have recovered uneventfully and was back in training after taking four months of rest.
Implications of the Study
- The key clinical message from this research was the utility of both CT and ultrasonography in providing critical diagnostic information about injuries to horses, specifically the basihyoid bone and insertion of the medial pterygoid muscle.
- This case demonstrates the importance of these imaging technologies in veterinary practice, distinguishing them as essential tools for accurate and timely diagnosis of complicated injuries.
Cite This Article
APA
Veerasammy B, Delli-Rocili M, Jensen M, Cribb N, Zur Linden A.
(2020).
Diagnostic imaging of a basihyoid bone fracture and partial avulsion of the medial pterygoid muscle in a horse.
Can Vet J, 61(1), 44-48.
Publication
Researcher Affiliations
- Department of Clinical Studies, Ontario Veterinary College, University of Guelph, Guelph, Ontario N1G 2W1.
- Department of Clinical Studies, Ontario Veterinary College, University of Guelph, Guelph, Ontario N1G 2W1.
- Department of Clinical Studies, Ontario Veterinary College, University of Guelph, Guelph, Ontario N1G 2W1.
- Department of Clinical Studies, Ontario Veterinary College, University of Guelph, Guelph, Ontario N1G 2W1.
- Department of Clinical Studies, Ontario Veterinary College, University of Guelph, Guelph, Ontario N1G 2W1.
MeSH Terms
- Animals
- Fractures, Bone / veterinary
- Horse Diseases
- Horses
- Male
- Mandible
- Pterygoid Muscles
- Radiography
- Tomography, X-Ray Computed
References
This article includes 14 references
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