Ultrassonografia da articulação femorotibiopatelar de ovinos com sinovite experimental
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2019-01-17
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Universidade Federal de Goiás
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The ovine stifle joint is complex and multiple bone and soft tissue elements comprise its anatomy. It is used as an experimental model for human stifle joint disease studies. Articular ultrasonography is an important diagnostic technique for articular diseases. However, there is a gap in the literature regarding ultrasound assessment of the ovine stifle joint as an experimental model. Thus, the purpose of this study was to describe sonographic changes of the ovine stifle joint undergone experimentally induced synovitis. Twelve ovine received intra-articular infusion of E. coli lipopolysaccharide in the right stifle joint to induce synovitis. Injected stifles were assessed by ultrasound at baseline and 12, 24, 48, 72 and 120 hours after intra-articular injection of lipopolysaccharide. Nine ultrasound positions were used to assess the stifle joint: suprapatelar area; lateral area of the femorotibial compartment; infrapatelar space; medial area of the femorotibial compartment; lateral femoropatelar compartment; medial femoropatelar compartment; craniolateral area; sheath of the origin of the extensor muscle tendons; and medial supracondilar recess. Stifle joint was evaluated for volume changes in the synovial fluid, thickness of the synovial membrane and cellularity. Intra-articular lipopolysaccharide injection yielded echographic changes in seven out of nine scanning positions at the ovine stifle joint. Changes were observed when the medial femorotibial compartment was evaluated in 11 animals (91.7%), in the craniolateral region, in 10 animals (83,34%), in the tendinous recess, in 11 animals (91.7%), and in the infrapatellar space, lateral and medial aspects of the femoropatellar compartments and medial supracondilar recess in all animals (100%). It was not observed alterations within the suprapatellar region and the lateral femorotibial compartment. Stifle joint ultrasound assessment was efficient for detection of intra-articular changes following infiltration with lipopolysaccharide in the ovine experimental model. The most observed signs were increase of the synovial fluid volume and thickening of the synovial membrane, 12, 24 and 48 hours after infiltration.
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SOUZA, M. F. S. Ultrassonografia da articulação femorotibiopatelar de ovinos com sinovite experimental. 2019. 54 f. Dissertação (Mestrado em Ciência Animal) - Universidade Federal de Goiás, Goiânia, 2019.