The computed tomographic appearance of equine temporohyoid osteoarthropathy.
Abstract: Equine temporohyoid osteoarthropathy is characterized by progressive osseous proliferation of the temporohyoid articulation and surrounding structures. The diagnosis has generally been made using radiography and endoscopy of the guttural pouch. Recently, computed tomography (CT) has been used in the diagnosis of temporohyoid osteoarthropathy. This study was performed to determine the CT imaging characteristics of temporohyoid osteoarthropathy and to compare these to radiographic and endoscopic findings. CT scans from 16 horses with a final diagnosis of temporohyoid osteoarthropathy were reviewed. Five horses that had undergone CT scan for reasons other than temporohyoid osteoarthropathy were included as controls. Qualitative and quantitative data were used to describe the magnitude of the CT findings. Osseous proliferation of the stylohyoid bone and temporohyoid articulation was found to be a consistent feature of temporohyoid osteoarthropathy. Thickening of the ceratohyoid bone and proliferation of its articulation with the stylohyoid bone was frequently identified and this finding may have surgical implications. Horses with neurologic deficits had increased stylohyoid width that was significantly different than the subclinically affected side. CT evaluation also allowed the identification of subclinical bilateral disease in horses thought to be unilaterally affected based on clinical examination.
Publication Date: 2009-04-30 PubMed ID: 19400460DOI: 10.1111/j.1740-8261.2009.01508.xGoogle Scholar: Lookup
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- Journal Article
Summary
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The research article discusses a study conducted to determine the characteristics of equine temporohyoid osteoarthropathy as viewed through Computed Tomography (CT) scans. The findings confirmed that equine temporohyoid osteoarthropathy consistently presents as osseous proliferation of the temporohyoid articulation and the stylohyoid bone.
Research Objective
- The main purpose of the study was to identify the imaging characteristics of equine temporohyoid osteoarthropathy through Computed Tomography (CT).
- Additionally, the research aimed to compare these CT findings with those from traditional radiographic and endoscopic examinations.
Methodology
- CT scans from 16 horses diagnosed with temporohyoid osteoarthropathy were reviewed.
- Five horses that had undergone CT scans for reasons other than the disease served as control.
- Data, both qualitative and quantitative, was used to describe the CT findings.
Findings
- Osseous proliferation of the stylohyoid bone and temporohyoid articulation was identified as the common feature of the disease.
- Considerable thickening of the ceratohyoid bone and its articulation with the stylohyoid bone was also frequently observed, which could possibly have implications for surgical interventions.
- Horses exhibiting neurologic deficits were found to have an increased stylohyoid width, significantly different from those with subclinical afflictions.
- Crucially, CT evaluations revealed subclinical bilateral disease in horses that were initially thought to be affected unilaterally based on clinical examinations.
Significance of the Study
- CT scans proved valuable in identifying the defining features of equine temporohyoid osteoarthropathy, thereby improving diagnosis accuracy.
- The findings have potential implications on how veterinarians choose to manage and treat this condition, most notably, in cases requiring potential surgical interventions.
Cite This Article
APA
Hilton H, Puchalski SM, Aleman M.
(2009).
The computed tomographic appearance of equine temporohyoid osteoarthropathy.
Vet Radiol Ultrasound, 50(2), 151-156.
https://doi.org/10.1111/j.1740-8261.2009.01508.x Publication
Researcher Affiliations
- William R. Pritchard Veterinary Medical Teaching Hospital, School of Veterinary Medicine, University of California, Davis, CA 95616, USA. hghilton@ucdavis.edu
MeSH Terms
- Animals
- Bone Diseases / diagnosis
- Bone Diseases / diagnostic imaging
- Bone Diseases / pathology
- Bone Diseases / veterinary
- Diagnosis, Differential
- Endoscopy / veterinary
- Facial Nerve Diseases / diagnosis
- Facial Nerve Diseases / diagnostic imaging
- Facial Nerve Diseases / pathology
- Facial Nerve Diseases / veterinary
- Female
- Horse Diseases / diagnosis
- Horse Diseases / diagnostic imaging
- Horse Diseases / pathology
- Horses
- Hyoid Bone / diagnostic imaging
- Hyoid Bone / pathology
- Male
- Retrospective Studies
- Temporal Bone / diagnostic imaging
- Temporal Bone / pathology
- Tomography, X-Ray Computed / methods
- Tomography, X-Ray Computed / veterinary
Citations
This article has been cited 11 times.- Thomas-Cancian A, Ségard-Weisse E, Drumond B, Cadoré JL. Diagnostic Imaging of Diseases Affecting the Guttural Pouch. Vet Sci 2023 Aug 16;10(8).
- Kozłowska N, Wierzbicka M, Jasiński T, Domino M. Advances in the Diagnosis of Equine Respiratory Diseases: A Review of Novel Imaging and Functional Techniques. Animals (Basel) 2022 Feb 4;12(3).
- Hartl B, Egerbacher M, Kneissl SM. Correlated Imaging of the Equine Hyoid Apparatus Using CT, Micro-CT, and Histology. Front Vet Sci 2021;8:652563.
- Veerasammy B, Delli-Rocili M, Jensen M, Cribb N, Zur Linden A. Diagnostic imaging of a basihyoid bone fracture and partial avulsion of the medial pterygoid muscle in a horse. Can Vet J 2020 Jan;61(1):44-48.
- Inui T, Yamada K, Itoh M, Yanagawa M, Higuchi T, Watanabe A, Imamura Y, Urabe M, Sasaki N. Computed tomography and magnetic resonance imaging findings for the initial stage of equine temporohyoid osteoarthropathy in a Thoroughbred foal. J Equine Sci 2017;28(3):117-121.
- Crijns CP, Baeumlin Y, De Rycke L, Broeckx BJ, Vlaminck L, Bergman EH, van Bree H, Gielen I. Intra-arterial versus intra venous contrast-enhanced computed tomography of the equine head. BMC Vet Res 2016 Jan 7;12:6.
- Aleman M, Spriet M, Williams DC, Nieto JE. Neurologic Deficits Including Auditory Loss and Recovery of Function in Horses with Temporohyoid Osteoarthropathy. J Vet Intern Med 2016 Jan-Feb;30(1):282-8.
- Nuss K, Malbon AJ, Braun U, Ringer S, Muggli E, Kircher P, Willmitzer F. Osteomyelitis of the hyoid bones in two calves. Acta Vet Scand 2015 Sep 22;57(1):52.
- Oliver ST, Hardy J. Ceratohyoidectomy for treatment of equine temporohyoid osteoarthopathy (15 cases). Can Vet J 2015 Apr;56(4):382-6.
- Hartl B, Strohmayer C, Vali Y, Lyrakis M, Kneissl SM. Computed tomographic signs of hyoid apparatus disease in 165 horses. Front Vet Sci 2025;12:1631185.
- Lloyd-Edwards RA, Mulders E, Sloet van Oldruitenborgh-Oosterbaan MM, Veraa S. Computed Tomography of the Hyoid Apparatus in Equine Headshaking Syndrome. Vet Sci 2025 May 23;12(6).
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