Equis ISSN 2398-2977

Prepubic tendon: rupture

Contributor(s): Wendy E Vaala, Madeleine L H Campbell

Introduction

  • Separation of ventral abdominal musculature including from its attachment to the pelvis.
  • Cause: heavy pregnant uterus in light breed mare; prolonged excessive ventral edema; hydrops of placental membranes, trauma, twinning.
  • Signs: sudden ventral displacement of caudal abdomen with edema and cranial displacement of the udder, with painful ventral edema cranial to udder and elevated tail head.
  • Diagnosis: physical examination, rectal palpation, ultrasonography.
  • Treatment: support abdomen until parturition; induce parturition when appropriate.
  • Prognosis: poor to grave for mare. Prognosis for future fertility if mare survives also grave, unless embryo transfer allowed by stud books.

Pathogenesis

Etiology

Predisposing factors

General

  • Draught breeds.
  • Old mares, often multiparous.
  • Prepubic tendon rupture can be a sequel of hydroallantois, hydroamnios and twinning.
  • Trauma.
  • Abdominal wall infection.
  • May occur spontaneously, without any predisposing factors.

Pathophysiology

  • Rupture of prepubic tendon and/or abdominal muscles can occur together or separately in late-pregnant mares.
  • Heavy pregnant uterus → increased weight on ventral abdomen → separation of ventral abdominal musculature from its attachment to the pelvis via the prepubic tendon or internally → sudden appearance of ventral displacement of caudal abdomen → accompanying edema.
  • Mare becomes progessively more uncomfortable and unable to move.
  • Rupture of the uterine vessels can occur.

Timecourse

  • Acute.

Diagnosis

This article is available in full to registered subscribers

Sign up now to purchase a 30 day trial, or Login

Treatment

This article is available in full to registered subscribers

Sign up now to purchase a 30 day trial, or Login

Prevention

This article is available in full to registered subscribers

Sign up now to purchase a 30 day trial, or Login

Outcomes

This article is available in full to registered subscribers

Sign up now to purchase a 30 day trial, or Login

Further Reading

Publications

Refereed papers

  • Recent references from PubMed and VetMedResource.
  • Dolente B (2004) Critical peripartum disease in the mare. Vet Clin North Am Equine Pract 20 (1), 151 -165 PubMed.
  • Santschi E M & LeBlanc M M (1995) Fetal and placental conditions that cause high-risk pregnancy in mares. Comp Cont Educ Pract Vet 17 (5), 710-720 VetMedResource.
  • Troedsson M (2007) High risk pregnant mare. Acta Veterinaria Scandinavica 49 (1), 59 VetMedResource
  • Perkins N R et al (1994) Reproductive emergencies in the mare. Vet Clin North Am Equine Pract 10 (3), 643-670 PubMed.
  • Jackson P G (1982) Rupture of the prepubic tendon in a shire mare. Vet Rec 111 (2), 38 PubMed.


ADDED