Postinjury performance for differing humeral stress fracture locations in the racing thoroughbred

Veterinary Surgery : VS
Brianne HendersonGabrielle Monteith

Abstract

To assess the influence of humeral stress fracture location on the time to return to racing and postinjury performance of thoroughbred racehorses. Retrospective study (1992-2015). Thoroughbred racehorses (n = 131) that presented for lameness with the sole diagnosis of humeral stress fractures in the lame limb, as determined by scintigraphy or radiology. Sex, fracture site, age, starts, earnings, and average earnings per race were examined for differences in pre-stress and post-stress fracture diagnosis for the entire population as well as individual stress fracture locations (general linear model, χ2 tests). Pre-stress and post-stress fracture performance for the three stress fracture locations were assessed: (1) earnings pre-stress and post-stress fracture (Kruskal-Wallis one-way analysis of variance), (2) average earnings per start prefracture, and (3) average earnings per start postfracture (Wilcoxon signed-rank tests). Stress fracture locations were caudodistal (n = 36), craniodistal (n = 43), and caudoproximal (n = 52). One hundred ten of 131 horses raced postfracture, and 54 of 131 horses raced prefracture. Age at injury was 43.61 months caudodistal, 33.48 months caudoproximal, and 36.65 months craniodistal. Horses return...Continue Reading

References

Jul 1, 1994·Equine Veterinary Journal·B J JohnsonJ Stoltz
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Apr 22, 2009·Journal of Orthopaedic Research : Official Publication of the Orthopaedic Research Society·Rachel C EntwistleSusan M Stover

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