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  • Title: Patellar tendon rupture in five deer.
    Author: Richman LK, Bush M.
    Journal: J Am Vet Med Assoc; 1998 Jun 01; 212(11):1776-8. PubMed ID: 9621888.
    Abstract:
    Acute unilateral or bilateral rupture of the patellar tendon was diagnosed in 5 aged obese female Pere David's deer housed at a zoological park. Rupture occurred after an episode of sudden exertion in 4 of 5 deer. Fragmentation, degeneration, necrosis, and mineralization of ruptured patellar tendon fibers were found on histologic examination. Similar changes were often seen in intact contralateral tendons that did not have gross lesions. Patellar tendon rupture in humans is associated with concurrent systemic disease, such as systemic lupus erythematosus, rheumatoid arthritis, or chronic renal failure. Without evidence of underlying systemic disease, spontaneous patellar tendon rupture in deer can be considered a sequela to age-related tendinous degeneration compounded by sudden exertion and chronic overload attributable to obesity.
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