Comparison of Outcome Following Semitendinosus Tenotomy Performed under Standing Sedation versus General Anesthesia for the Treatment of Fibrotic Myopathy in Horses

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2017-04-11
Authors
Hays, Ashley
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Altmetrics
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Veterinary Clincal Sciences
Abstract

This retrospective study reports outcome following semitendinosus tenotomy, performed under standing sedation (novel modification of the original technique), as compared to those performed under general anesthesia (GA). Medical records of horses undergoing semitendinosus tenotomy as treatment of fibrotic myopathy under standing sedation and GA were reviewed. Long-term outcome was subdivided into 4 groups based on gait improvement and post-operative athletic use. Overall 62% of cases benefited to varying degrees from semitendinosus tenotomy. Of 8 horses treated under standing sedation, 37.5% had full improvement of gait, 25% had moderate improvement with mild residual gait deficit, 12.5% had mild improvement with moderate residual gait deficit, and 25% had no improvement. Of the 13 limbs of 12 horses treated under GA, 23% had full improvement in the gait, 23% had moderate improvement with mild residual gait deficit, 8% had mild improvement with moderate residual gait deficit, and 46% had no improvement. Overall, 83% of horses treated under standing sedation and 67% treated under GA were able to return to the same level of pre-injury athletic performance. Performing semitendinosus tenotomy under standing sedation, as compared to GA, allows for easier palpation of the semitendinosus tendon insertion, has reduced cost, and results in similar outcomes.

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