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Patellar tendon rupture in five deer

L K Richman1, M Bush

  • 1Department of Pathology, National Zoological Park, Smithsonian Institution, Washington, DC 20008-2598, USA.

Journal of the American Veterinary Medical Association
|June 11, 1998
PubMed
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Acute patellar tendon rupture in aged, obese female Pere David's deer is linked to degeneration and exertion. Histology revealed tendon fiber damage, even in unruptured tendons, suggesting underlying chronic issues.

Area of Science:

  • Veterinary Pathology
  • Zoological Medicine
  • Musculoskeletal Research

Background:

  • Patellar tendon rupture is uncommon in animals, often associated with trauma.
  • Human cases link tendon rupture to systemic diseases and degeneration.
  • Understanding spontaneous rupture in exotic species is crucial for welfare.

Observation:

  • Five aged, obese female Pere David's deer presented with acute patellar tendon rupture (unilateral or bilateral).
  • Sudden exertion precipitated rupture in four of the five deer.
  • Histological examination revealed fragmentation, degeneration, necrosis, and mineralization of tendon fibers.

Findings:

  • Degenerative changes were also observed in intact contralateral tendons lacking gross lesions.
  • Spontaneous patellar tendon rupture in these deer is likely multifactorial.

Related Experiment Videos

  • Age-related tendinous degeneration, compounded by obesity and sudden exertion, is implicated.

    • Implications:

    • This study highlights the role of chronic tendinopathy and biomechanical overload in spontaneous tendon rupture in deer.
    • Findings may inform preventative strategies for captive exotic ungulates, focusing on weight management and controlled activity.
    • Comparative pathology insights could aid understanding of human tendinopathies.