Equis ISSN 2398-2977

Larynx: arytenoidectomy

Contributor(s): Stephen Adams, Graham Munroe, Rachel Murray, Dwayne Rodgerson

Introduction

  • Partial arytenoidectomy:
    • Removal of the corniculate and arytenoid cartilages leaving only the muscular process.
    • This is superior to subtotal arytenoidectomy in restoring upper airway function. Coughing and dysphagia are common complications.
  • Subtotal arytenoidectomy - removal of arytenoid cartilage only. Muscular process and corniculate cartilage are left in place.

Uses

Advantages

  • Partial arytenoidectomy - may restore athletic performance.

Disadvantages

  • Technically difficult.
  • Partial arytenoidectomy - coughing, dysphagia, aspiration pneumonia.

Requirements

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Preparation

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Procedure

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Aftercare

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Outcomes

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Prognosis

  • Less favorable in bilateral or advanced cases - especially where adjacent laryngeal cartilages or tissues are involved.
  • 20-50% of race horses can return to racing.
  • Up to 75% of non-race horses return to previous use.

Further Reading

Publications

Refereed papers

  • Recent references from PubMed and VetMedResource.
  • Menéndez I M, Mancha D A I & Fitch G (2013) Fourth branchial arch defects in full-siblings treated with a partial arytenoidectomy. Equine Vet Educ 25 (6), 274-277 VetMedResource.
  • Parente E J, Tulleners E P & Southwood L L (2008) Long-term study of partial arytenoidectomy with primary mucosal closure in 76 Thoroughbred racehorses (1992-2006). Equine Vet J 40 (3), 214-218 PubMed.
  • Belknap J K et al (1990) Failure of subtotal arytenoidectomy to improve upper airway flow mechanics in exercising Standardbreds with induced laryngeal hemiplegia. Am J Vet Res 51 (9), 1481-1487 PubMed.
  • Tullevens E P et al (1988) Management of arytenoid chondropathy and failed laryngoplasty in horses - 75 cases (1979-1985). JAVMA 192 (5), 670-675 PubMed.

Other sources of information

  • Parente E J, Tulleners E & Southwood L L (2003)Partial Arytenoidectomy for Treatment of Failed Laryngoplasty or Arytenoid Chondritis.In:Proc 49th AAEP Convention.pp 373-376.
  • Stick J Aet al(1999)Larynx.In:Equine Surgery.2nd edn. Eds: Auer J A & Stick J A. W B Saunders Co, Philadelphia. pp 364-366.


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