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Clinical Effect of Tibial Plateau Leveling Osteotomy Compared to Lateral Fabellar Suture in Dogs

Wanda J Gordon-Evans

Published:  27/07/2016    in:  Articles
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Abstract

Objective: This manuscript used evidence based statistical methods that estimate clinical treatment effect rather than whether groups were statistically different.

Background: The previously published blinded, randomised, controlled clinical trial comparing lateral fabellar suture (LFS) and tibial plateau leveling osteotomy (TPLO) was reported with a traditional analysis comparing groups. Although this was a well-designed study, evidence based statistical methods that estimate treatment effect would be helpful to the practitioner.

Methods: The effect size and number needed to treat (NNT) were calculated for the outcome measures with significant differences between groups using the data from a previously published randomised controlled clinical trial comparing TPLO and LFS in dogs with cruciate rupture.  

Results: The effect size of the peak vertical force (PVF) at a trot, 1 year after TPLO over LFS, was moderate to high (0.71) with a NNT of 6. The NNT for satisfaction was 7.

Conclusion/Application: Based on this study, the effect size and NNTs are such that the clinical difference warrants recommending the TPLO over the LFS in large and giant breed dogs.

 

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