ArticleEquine veterinary journal2026
Computed tomography of the equine temporohyoid joint: Association between imaging changes and potential risk factors.
Article in Equine veterinary journal, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.
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Who cites it
3 citing papers in PubMed.
- Ceratohyoidectomy for Management of Unilateral and Bilateral Temporohyoid Osteoarthropathy: Long-Term Outcome in 33 Equids.Animals : an open access journal from MDPI · 2026Article
- Computed tomography of the equine temporohyoid joint: Association between imaging changes and potential risk factors.Equine veterinary journal · 2026Article
- Computed tomographic signs of hyoid apparatus disease in 165 horses.Frontiers in veterinary science · 2025Article
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4 authors.
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Abstract
backgroundTemporohyoid osteoarthropathy (THO) is characterised by bone proliferation and cartilage ossification caused by infectious and degenerative conditions, amongst others.
objectivesTo describe the variable appearance of the temporohyoid joint (THJ) on computed tomography (CT) and investigate associations between CT changes and potential risk factors. STUDY
designCross-sectional study.
methodsHead CT examinations were assessed. A grading system was developed for osseous proliferation (grade 0 [normal] to 3 [severe]) and tympanohyoid cartilage change (grade 0 [normal] to 3 [complete ossification]). Grades were also summed to create an overall sum grade. Ordinal logistic regression was performed to produce a multivariable model that assessed the association between THJ grade and signalment, presenting signs, CT features, and final diagnosis.
resultsThe horses included (n = 424) most commonly presented for dental and sinus disorders (37.7%). The most frequently observed (mode) bone grade, cartilage grade and overall grade were 2 (41.9%), 0 (52.6%) and 2 (27.0%), respectively. Bone proliferation was most common medially and caudally. Soft tissue swelling (OR 1.9, 95% CI 1.2-3.1, p < 0.05) and temporal bone fragmentation (OR 26.6, 95% CI 5.1-141.4, p < 0.05) were associated with increased bone grade. There was no correlation between increased grade and any presenting sign. Increased sum grade was significantly associated with increased age (OR per year 1.1, 95% CI 1.0-1.1, p < 0.05), Arabians (OR 4.2, 95% CI 1.3-14.0, p < 0.05) and Thoroughbreds (OR 2.9, 95% CI 1.5-5.4, p < 0.05) relative to Warmbloods. MAIN LIMITATIONS: Following training, a single observer evaluated images.
conclusionsModerate caudomedial osseous proliferation of the THJ is common in horses presented for unrelated disease. Cartilage mineralisation, soft tissue swelling, and temporal bone fragmentation may serve as markers of disease. Thoroughbreds and Arabians are at increased risk of greater THJ remodelling. Increased THJ change was associated with age but not otitis, suggesting THO is predominantly degenerative.
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