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Home / Equine Research Bank / Equine Vet J / Racing and sales performance in Thoroughbred yearlings after...
Equine veterinary journal2025; doi: 10.1111/evj.14532

Racing and sales performance in Thoroughbred yearlings after carpal osteochondral fragment removal.

Abstract: While radiographically evident carpal osteochondral fragments (COF) in Thoroughbred yearlings impair sales, their impact on future racing performance has been minimally investigated. Objective: To assess the impact of COF on Thoroughbred yearling sales and racing performance, and whether these are improved by arthroscopic removal. We hypothesised that surgical removal of COF improves Thoroughbred yearling sales and racing performance. Methods: Retrospective observational. Methods: Using clinical records from years 2015-2018, 46 Thoroughbred yearlings with COF were identified and allocated to a surgically (SX group, n = 26) or conservatively (No-SX, n = 20) treated group. A control group consisted of 138 sire- and year-matched siblings without radiographic findings. Data were analysed using ANOVA with backward selection regression. Results: Identification of COF on radiographic surveys was associated with significantly lower sales prices and total winnings, regardless of treatment, with horses in both SX and No-SX groups achieving fewer starts and seasons raced when compared with controls. Overall variables and co-variables indicating racing and sales performances did not differ significantly between the SX group and the No-SX group; however, horses with COF treated surgically were more likely to achieve a racing career than those treated conservatively (OR: 6.2, p = 0.03, 95% CI: 0.987-69.690). When compared with control horses, conservative management of COF was overall associated with significantly poorer sales and racing performances. No such differences were observed between the SX group and the control group. Conclusions: The limited sample size and single centre limit generalisability. No further radiographic re-examination data were obtained during horses' careers. Conclusions: Our data indicates that COF can impair a Thoroughbred's racing and especially sales performance. Larger cohorts of affected horses may help demonstrate the benefits of arthroscopic COF removal on sales and athletic performance.
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Publication Date: 2025-05-15 PubMed ID: 40371840DOI: 10.1111/evj.14532Google Scholar: Lookup
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Summary

This research summary has been generated with artificial intelligence and may contain errors and omissions. Refer to the original study to confirm details provided. Submit correction.

The research investigates the impact of carpal osteochondral fragments (COF) in Thoroughbred yearlings on sales and future racing performance, by comparing surgically and conservatively managed groups. Results showed that COF reduced sales prices and winnings, irrespective of treatment, but surgical removal appeared to boost chances for a racing career.

Objective and Hypothesis

  • The objective of this research is to study the impact of existing Carpal Osteochondral Fragments (COF) on the sales value and future racing performance of Yearling Thoroughbreds.
  • The hypothesis at the onset is that surgical removal of COF enhances yearling sales and subsequently improves their racing performance.

Methodology

  • The researchers used a retrospective observational method employing clinical records from years 2015 to 2018. The subjects, 46 Thoroughbred yearlings with COF, were divided into two groups: those who had undergone surgical removal of COF (SX group, n = 26) and those who were conservatively managed (No-SX group, n = 20).
  • A control group was made up of 138 siblings of the same sire and year, with no radiographic findings of COF.
  • Data was analysed using Analysis of Variance (ANOVA) with a backward selection regression method.

Results

  • Presence of COF, as identified by radiographic survey, was found to correlate with lower sales prices and total winnings, with horses from both SX and No-SX groups achieving fewer race starts and seasons compared to the control group.
  • The variables and co-variables indicative of sales and racing performance didn’t show significant difference between SX and No-SX groups. However, horses with surgically removed COF had higher odds of starting a racing career than those managed conservatively.
  • In comparison to control horses, conservative management of COF led to notably poorer sales and racing performance. There was no such difference observed between horses that had COF arthroscopically removed (SX group) and the control group.

Conclusions and Limitations

  • Despite the limitations of smaller sample size and research being confined to a single centre, the data suggests that COF can degrade sales performance and hamper a Thoroughbred’s racing career.
  • The researchers hint that a larger sample size could better demonstrate the potential benefits of arthroscopic COF removal on sales and racing performance of Thoroughbreds.

Cite This Article

APA
Debald DC, Stanton VL, Sandow CB, Rodgerson DH, Spirito MA, Hunt RJ, Menarim BC. (2025). Racing and sales performance in Thoroughbred yearlings after carpal osteochondral fragment removal. Equine Vet J. https://doi.org/10.1111/evj.14532

Publication

Equine veterinary journal
ISSN: 2042-3306
NlmUniqueID: 0173320
Country: United States
Language: English

Researcher Affiliations

Debald, Daria C
  • University of Veterinary Medicine Vienna, Vienna, Austria.
Stanton, Victoria L
  • Department of Statistics, College of Art & Sciences, University of Kentucky, Lexington, Kentucky, USA.
Sandow, Cole B
  • Hagyard Equine Medical Institute, Lexington, Kentucky, USA.
Rodgerson, Dwayne H
  • Hagyard Equine Medical Institute, Lexington, Kentucky, USA.
Spirito, Michael A
  • Hagyard Equine Medical Institute, Lexington, Kentucky, USA.
Hunt, Robert J
  • Hagyard Equine Medical Institute, Lexington, Kentucky, USA.
Menarim, Bruno C
  • Gluck Equine Research Center, Martin-Gatton College of Agriculture, Food and Environment, University of Kentucky, Lexington, Kentucky, USA.

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