Abstract
ABSTRACT: The aim of this paper was to describe the clinical and sonographic findings of partial tear at the musculotendinous junction of the proximal long digital extensor tendon during the acute phase and one year after initial presentation. The dog presented with acute, moderate weight-bearing lameness of the right hind limb. During an orthopedic examination of the stifle, the dog expressed pain on extension and flexion of the right knee. Under general anesthesia, no instability was evident. Radiographic images suggested the presence of joint effusion in the right stifle. Ultrasonography revealed that the long digital extensor tendon was hyperechoic, surrounded by an anechoic effusion, and the muscle fibers were disorganized and interspersed with anechoic fluid. Clinical outcome was considered good after conservative treatment. The dog was re-evaluated approximately one year after treatment and did not present with any clinical signs.
Highlights
Ruptura parcial do tendão extensor digital longo em cão RESUMO: O objetivo deste trabalho é descrever os achados clínicos e ultrassonográficos da ruptura parcial do tendão extensor digital longo em sua porção proximal, na junção musculotendínea, durante a fase aguda e um ano após a apresentação inicial
The long digital extensor (LDE) originates from the extensor fossa on the lateral epicondyle of the femur and is protected by a capsular synovial bursa on the lateral aspect of the stifle; it runs through the extensor groove on the craniolateral aspect of the tibia and inserts at the distal phalanx of II-V digits (KENNEDY et al, 2014)
There are no reports of a partial tear of proximal LDE tendon at the musculotendinous junction (MTJ) in dogs in the current literature
Summary
Ruptura parcial do tendão extensor digital longo em cão RESUMO: O objetivo deste trabalho é descrever os achados clínicos e ultrassonográficos da ruptura parcial do tendão extensor digital longo em sua porção proximal, na junção musculotendínea, durante a fase aguda e um ano após a apresentação inicial. Injuries of the LDE in dogs are rare, but displacements of the proximal tendon, avulsion and mineralization have previously been described (KENNEDY et al, 2014; VERHOEVEN et al, 2007; ROOSTER et al, 2004).
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