Partial ceratohyoidectomy as surgical treatment for horses with temporohyoid osteoarthropathy: 10 cases (2010–2021)

Alyson D. Booth Veterinary Population Medicine Department, College of Veterinary Medicine, University of Minnesota, Saint Paul, MN

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Felipe Lara Hidalgo Unidad de Medicina y Cirugia Equina Hospital Clinico Veterinario, Universidad Andres Bello, Santiago, Chile

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Fausto Bellezzo Veterinary Population Medicine Department, College of Veterinary Medicine, University of Minnesota, Saint Paul, MN

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Jenna M. Young Veterinary Population Medicine Department, College of Veterinary Medicine, University of Minnesota, Saint Paul, MN

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Alex W. Bianco Veterinary Population Medicine Department, College of Veterinary Medicine, University of Minnesota, Saint Paul, MN

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Lauren E. Hughes Veterinary Population Medicine Department, College of Veterinary Medicine, University of Minnesota, Saint Paul, MN

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Mike Maher Brandon Equine Medical Center, Brandon, FL

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Troy N. Trumble Veterinary Population Medicine Department, College of Veterinary Medicine, University of Minnesota, Saint Paul, MN

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Nicolas Ernst Veterinary Population Medicine Department, College of Veterinary Medicine, University of Minnesota, Saint Paul, MN
Unidad de Medicina y Cirugia Equina Hospital Clinico Veterinario, Universidad Andres Bello, Santiago, Chile

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Abstract

OBJECTIVE

To describe outcomes of horses with temporohyoid osteoarthropathy (THO) treated with partial ceratohyoidectomy.

ANIMALS

10 client-owned horses

PROCEDURES

Medical records from 2 institutions were examined for records of horses with THO treated with partial ceratohyoidectomy between 2010 and 2021. History, signalment, clinical signs, diagnostics, medications, and surgery-related details were recorded. Horses with a minimum of 6 months follow-up were recruited for neurologic and imaging examinations in the hospital or field where radiography of the basihyoid-ceratohyoid articulation were performed along with CT, when available.

RESULTS

10 horses with THO were included (9 unilateral; 1 bilateral). Nine planned partial ceratohyoidectomies were performed in 8 horses, whereas 2 horses had preoperatively planned complete ceratohyoidectomies transitioned to partial ceratohyoidectomies during surgery due to intraoperative complications. Postoperative complications occurred mostly in transitioned surgeries (obstructed airway, tongue mobility issues, and incisional hemorrhage), whereas only 1 horse with a planned ceratohyoidectomy had postoperative complication of rhabdomyolysis. All complications resolved before hospital discharge. Neurologic signs improved in all 10 horses, with 2 showing complete resolution. Nine horses were available for radiographic follow-up, 6 of which also had head CT scans. A space between the ceratohyoid and basihyoid bones was measurable on radiography in all 9 horses, and was confirmed on CT. Three horses demonstrated proliferation of either ceratohyoid or basihyoid bones. The 9 horses with unilateral disease returned to previous work, and the horse with bilateral disease was retired.

CLINICAL RELEVANCE

Partial ceratohyoidectomy is a surgical option for treatment of THO that provides similar clinical outcomes to published reports on ceratohyoidectomy.

Abstract

OBJECTIVE

To describe outcomes of horses with temporohyoid osteoarthropathy (THO) treated with partial ceratohyoidectomy.

ANIMALS

10 client-owned horses

PROCEDURES

Medical records from 2 institutions were examined for records of horses with THO treated with partial ceratohyoidectomy between 2010 and 2021. History, signalment, clinical signs, diagnostics, medications, and surgery-related details were recorded. Horses with a minimum of 6 months follow-up were recruited for neurologic and imaging examinations in the hospital or field where radiography of the basihyoid-ceratohyoid articulation were performed along with CT, when available.

RESULTS

10 horses with THO were included (9 unilateral; 1 bilateral). Nine planned partial ceratohyoidectomies were performed in 8 horses, whereas 2 horses had preoperatively planned complete ceratohyoidectomies transitioned to partial ceratohyoidectomies during surgery due to intraoperative complications. Postoperative complications occurred mostly in transitioned surgeries (obstructed airway, tongue mobility issues, and incisional hemorrhage), whereas only 1 horse with a planned ceratohyoidectomy had postoperative complication of rhabdomyolysis. All complications resolved before hospital discharge. Neurologic signs improved in all 10 horses, with 2 showing complete resolution. Nine horses were available for radiographic follow-up, 6 of which also had head CT scans. A space between the ceratohyoid and basihyoid bones was measurable on radiography in all 9 horses, and was confirmed on CT. Three horses demonstrated proliferation of either ceratohyoid or basihyoid bones. The 9 horses with unilateral disease returned to previous work, and the horse with bilateral disease was retired.

CLINICAL RELEVANCE

Partial ceratohyoidectomy is a surgical option for treatment of THO that provides similar clinical outcomes to published reports on ceratohyoidectomy.

Supplementary Materials

    • Supplementary Table S1 (PDF 138 KB)
    • Supplementary Table S2 (PDF 104 KB)
    • Supplementary Table S3 (PDF 98 KB)
    • Supplementary Table S4 (PDF 118 KB)
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