Use of standing low-field magnetic resonance imaging to assess oblique distal sesamoidean ligament desmitis in three Thoroughbred racehorses

Fumiaki Mizobe, Jun Okada, Yuta Shinzaki, Motoi Nomura, Tomohiro Kato, Kazutaka Yamada, Mathieu Spriet

Research output: Contribution to journalArticle

2 Scopus citations

Abstract

Desmitis of the oblique distal sesamoidean ligaments (ODSL) is caused by hyperextension of the metacarpophalangeal/meta-tarsophalangeal joint and has been described as a significant cause of lameness in racehorses. In this study, three Thoroughbred racehorses (age range: 3–6 years) were diagnosed with desmitis of the forelimb ODSL using standing low-field magnetic resonance imaging (sMRI). Radiography and ultrasonography were inconclusive with regard to a definitive diagnosis. For all horses, the sMRI characteristics included increased signal intensity within the medial ODSL on T1-weighted gradient echo, T2-weighted fast spin echo and short tau inversion recovery fast spin echo images, which use a fat suppression technique. Effusion of the digital flexor tendon sheath was also clearly visible on sMRI. Following rest and controlled exercise for roughly 3 months, two horses successfully returned to racing within 5 months. Our findings support the use of sMRI for diagnosing ODSL injuries in Thoroughbred racehorses.

Original languageEnglish (US)
Pages (from-to)1475-1480
Number of pages6
JournalJournal of Veterinary Medical Science
Volume78
Issue number9
DOIs
StatePublished - Sep 1 2016

Keywords

  • Desmitis
  • Magnetic resonance imaging
  • Oblique distal sesamoidean ligament
  • Racehorse

ASJC Scopus subject areas

  • veterinary(all)

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