Clinical, radiographic, and magnetic resonance imaging findings of gastrocnemius musculotendinopathy in various dog breeds

Author:

Harms Oliver,Konar Martin,Staudacher Anne,Langer Anna,Thiel Cetina,Kramer Martin,Schaub Sebastian,von Pückler Kerstin,Kaiser Susanne

Abstract

SummaryObjectives: To describe clinical, radio-graphic, and magnetic resonance imaging (MRI) findings in 16 dogs diagnosed with gastrocnemius musculotendinopathy.Methods: Retrospective evaluation of medical records, radiographs, and MRI results, as well as follow-up completed by telephone questionnaire.Results: Most dogs had chronic hindlimb lameness with no history of trauma or athletic activities. Clinical examination revealed signs of pain on palpation without stifle joint instability. Seven dogs had radiographic signs of osteophyte formation on the lateral fabella. Magnetic resonance imaging revealed T2 hyperintensity and uptake of contrast agent in the region of the origin of the gastrocnemius muscle. Changes were found in the lateral and medial heads of the gastrocnemius. Conservative treatment resulted in return to full function in 11 dogs. Two dogs showed partial restoration of normal function, one dog showed no improvement. Two dogs were lost to follow-up.Clinical significance: Gastrocnemius musculotendinopathy is a potential cause of chronic hindlimb lameness in medium to large breed dogs. A history of athletic activity must not necessarily be present. Magnetic resonance imaging shows signal changes and uptake of contrast agent in the region of the origin of the gastrocnemius muscle. A combination of T1 pre- and post-contrast administration and T2 weighted sequences completed by a fat-suppressed sequence in the sagittal plane are well-suited for diagnosis. Conservative treatment generally results in return to normal function.Supplementary Material to this article is available online at http://dx.doi.org/10.3415/VCOT-16-01-0015.

Publisher

Georg Thieme Verlag KG

Subject

General Veterinary,Animal Science and Zoology

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