Linkage of jockey falls and injuries with racehorse injuries and fatalities in Thoroughbred flat racing in Victoria, Australia.
Abstract: Racehorse and jockey incidents on race-days frequently occur together, yet risk factors for their occurrence have historically been investigated separately. Consideration of both horses and humans in tandem is required for a One Health approach to risk reduction. Our objectives were to therefore identify modifiable risk factors for adverse outcomes that are common or conflicting to both horses and their jockeys in Thoroughbred racing. Unassigned: Australian Single National System records for the 2004/05 to 2018/19 flat racing season were merged with the corresponding Australian Racing Incident Database records. Incidence rate ratios (IRR) with 95% confidence intervals (CI) were estimated for the outcomes of racehorse musculoskeletal injury (MSI), racehorse fatality, jockey falls and jockey injury using Poisson regression. Horse-level, race-level, jockey-level and trainer-level factors associated with each adverse outcome during or post-race were identified using multivariable logistic regression. Unassigned: The incidence of MSI was 21.21 (20.84, 21.59), racehorse fatalities 0.55 (0.50, 0.61), jockey falls was 3.01 (2.80, 3.24), and jockey injuries 1.79 (1.63, 1.97) per 1000 flat race starts. There was a decrease in racehorse MSI and jockey falls over the study period but no change in racehorse fatality or jockey injury incidence. In multivariable analysis, longer race distances and higher caliber races were associated with horse (p < 0.01), but not jockey, incidents. Firmer turf surfaces were associated with greater risk of both horse incidents and jockey falls (p < 0.05). Racehorses that were of older age at their first start, and/or had prior race-day injuries had a greater risk of injury and fatality (p < 0.001, p < 0.01, respectively). The most prominent risk factor for jockey fall or injury was a racehorse incident, although overall contributing to a relatively small proportion; 8.6% (n = 42/489) of jockey falls and 15.3% (n = 24/147) of injuries. Jockeys with fewer career starts were at greater risk of falling, and those with a higher percentage of last place finishing positions were at greater risk of injury (p < 0.001). Unassigned: As there were no conflicting risk factors identified between racehorse and jockey injury, policies aimed at reducing horse injury risk are also expected to benefit their riders.
Copyright © 2025 Morrice-West, Thomas, Wong, Flash, Whitton and Hitchens.
Publication Date: 2025-02-13 PubMed ID: 40018508PubMed Central: PMC11865924DOI: 10.3389/fvets.2024.1481016Google Scholar: Lookup
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Summary
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The research reports on the relationship between accidents involving jockeys and injuries to racehorses during flat races in Victoria, Australia. It finds that changes made to reduce the chance of injuries to horses may also reduce the risk to jockeys, as no conflicting risk factors were found in the studied incidents.
Data Collection and Analysis
- The researchers compiled records from the Australian Single National System for the flat racing seasons of 2004/05 to 2018/19. They matched these records with the corresponding entries in the Australian Racing Incident Database.
- The study focused on incidents that resulted in musculoskeletal injuries (MSI) to the horses, racehorse deaths, falls by jockeys and injuries to the jockeys.
- The research team employed Poisson regression for estimating Incidence rate ratios (IRR) along with their 95% confidence intervals (CI).
- They then utilized multivariate logistic regression to identify the risk factors for these adverse events, taking into account variables at the horse, race, jockey, and trainer levels.
Key Findings
- The analysis found that the incident rate of MSI in horses was 21.21, racehorse deaths was 0.55, jockey falls was 3.01, and jockey injuries was 1.79 per 1000 flat starts.
- There was a decrease in the incidence of horse MSIs and jockey falls over the study period, but no significant change in the number of horse fatalities or jockey injuries.
- The data showed that longer races and races of a higher caliber were more risky for the horses, while firmer turf surfaces increased the risk of incidents for both horses and jockeys.
- Horses that were older at their first start or had previous race-day injuries were more likely to suffer injuries or die.
- One of the biggest risk factors for a jockey fall or injury was an incident involving the horse, although this scenario was fairly infrequent, contributing to 8.6% of jockey falls and 15.3% of their injuries.
- Less experienced jockeys were more prone to falls, and those with a high rate of last place finishes were more likely to get injured.
Study Implications
- No conflict was found between the risk factors for horse injuries and jockey injuries, suggesting that measures to reduce the risk for one are also likely to benefit the other.
Cite This Article
APA
Morrice-West AV, Thomas M, Wong ASM, Flash M, Whitton RC, Hitchens PL.
(2025).
Linkage of jockey falls and injuries with racehorse injuries and fatalities in Thoroughbred flat racing in Victoria, Australia.
Front Vet Sci, 11, 1481016.
https://doi.org/10.3389/fvets.2024.1481016 Publication
Researcher Affiliations
- Equine Centre, Melbourne Veterinary School, Faculty of Science, University of Melbourne, Werribee, VIC, Australia.
- Equine Centre, Melbourne Veterinary School, Faculty of Science, University of Melbourne, Werribee, VIC, Australia.
- Equine Centre, Melbourne Veterinary School, Faculty of Science, University of Melbourne, Werribee, VIC, Australia.
- Melbourne Veterinary School, University of Melbourne, Parkville, VIC, Australia.
- Equine Centre, Melbourne Veterinary School, Faculty of Science, University of Melbourne, Werribee, VIC, Australia.
- Equine Centre, Melbourne Veterinary School, Faculty of Science, University of Melbourne, Werribee, VIC, Australia.
Conflict of Interest Statement
The authors declare that this study received funding from Racing Victoria Ltd. The funder provided data for the study. The funder was not involved in the study design, interpretation of data, or the writing of this article.
References
This article includes 52 references
- Lönker NS, Fechner K, Abd El Wahed A. Horses as a crucial part of one health. Vet Sci (2020) 7:28.
- Hodgson K, Darling M. Zooeyia: an essential component of “one health”. Can Vet J (2011) 52:189.
- Gibbs EPJ. The evolution of one health: a decade of progress and challenges for the future. Vet Rec (2014) 174:85–91.
- Mannion CJ, Shepherd K. One health approach to dog bite prevention. Vet Rec (2014) 174:151.
- Smith RK, McIlwraith CW. “One health” in tendinopathy research: current concepts. J Orthop Res (2021) 39:1596–602.
- Cherry C, Leong KM, Wallen R, Buttke D. Risk-enhancing behaviors associated with human injuries from bison encounters at Yellowstone National Park, 2000–2015. One Health (2018) 6:1–6.
- Schnabel LV, Koch DW. Use of mesenchymal stem cells for tendon healing in veterinary and human medicine: getting to the “core” of the problem through a one health approach. J Am Vet Med Assoc (2023) 261:1435–42.
- Rock MJ, Rault D, Degeling C. Dog-bites, rabies and one health: towards improved coordination in research, policy and practice. Soc Sci Med (2017) 187:126–33.
- Hitchens PL, Ryan K, Koch SI, Scollay MC, Peterson ML. A sustainable structure for jockey injury data management for the north American horse racing industry. Injury (2019) 50:1418–22.
- Haddon W. The changing approach to the epidemiology, prevention, and amelioration of trauma: the transition to approaches etiologically rather than descriptively based. Inj Prev (1999) 5:231–5.
- Hitchens PL, Blizzard CL, Jones G, Day LM, Fell J. The association between jockey experience and race-day falls in flat racing in Australia. Inj Prev (2012) 18:385–91.
- Hitchens PL, Hill AE, Stover SM. Jockey falls, injuries, and fatalities associated with thoroughbred and Quarter horse racing in California, 2007-2011. Orthop J Sports Med (2013) 1:2325967113492625.
- Harrison SM, Whitton RC, Kawcak CE, Stover SM, Pandy MG. Evaluation of a subject-specific finite-element model of the equine metacarpophalangeal joint under physiological load. J Biomech (2014) 47:65–73.
- Parkin T, French N, Riggs C, Morgan K, Clegg P, Proudman C. Risk of fatal distal limb fractures among Thoroughbreds involved in the five types of racing in the United Kingdom. Vet Rec (2004) 154:493–7.
- Parkin TD, Clegg PD, French NP, Proudman CJ, Riggs CM, Singer ER. Catastrophic fracture of the lateral condyle of the third metacarpus/metatarsus in UK racehorses - fracture descriptions and pre-existing pathology. Vet J (2006) 171:157–65.
- Hill W. Survey of injuries in Thoroughbreds at the New York racing association tracks. Clin Tech Equine Pract (2003) 2:323–8.
- Johnson BJ, Stover SM, Daft BM, Kinde H, Read DH, Barr BC. Causes of death in racehorses over a 2 year period. Equine Vet J (1994) 26:327–30.
- Hitchens P, Hill A, Stover S. The role of catastrophic injury or sudden death of the horse in race-day jockey falls and injuries in California, 2007–2012. Equine Vet J (2016) 48:50–6.
- Mizobe F, Takahashi Y, Kusano K. Risk factors for jockey falls in Japanese Thoroughbred flat racing. J Equine Vet (2021) 106:103749.
- Wylie C, McManus P, McDonald C, Jorgensen S, McGreevy P. Thoroughbred fatality and associated jockey falls and injuries in races in New South Wales and the Australian Capital Territory, Australia: 2009–2014. Vet J (2017) 227:1–7.
- Flash M, Shrestha K, Stevenson M, Gilkerson J. National participation levels in the 2017–2018 Australian Thoroughbred racing season. Aust Vet J (2023) 101:265–74.
- Hitchens PL, Blizzard CL, Jones G, Day LM, Fell J. The incidence of race-day jockey falls in Australia, 2002–2006. Med J Aust (2009) 190:83–6.
- Boden LA, Anderson GA, Charles JA, Morgan KL, Morton JM, Parkin TDH. Risk of fatality and causes of death of Thoroughbred horses associated with racing in Victoria, Australia: 1989–2004. Equine Vet J (2006) 38:312–8.
- Hitchens PL, Curry B, Blizzard CL, Palmer AJ. A decision tree model for the implementation of a safety strategy in the horse-racing industry. Inj Prev (2015) 21:109–14.
- Maeda Y, Tomioka M, Hanada M, Oikawa M-A. Influence of track surface condition on racing times of Thoroughbred racehorses in flat races. J Equine Vet (2012) 32:689–95.
- Hitchens P, Morrice-West AV, Stevenson M, Whitton RC. Meta-analysis of risk factors for racehorse catastrophic musculoskeletal injury in flat racing. Vet J (2018) 245:29–40.
- Bailey CJ, Reid SWJ, Hodgson DR, Bourke JM, Rose RJ. Flat, hurdle and steeple racing risk factors for musculoskeletal injury. Equine Vet J (1998) 30:498–503.
- Pinchbeck G, Clegg P, Proudman C, Stirk A, Morgan K, French N. Horse injuries and racing practices in National Hunt racehorses in the UK: the results of a prospective cohort study. Vet J (2004) 167:45–52.
- Takahashi T, Kasashima Y, Ueno Y. Association between race history and risk of superficial digital flexor tendon injury in Thoroughbred racehorses. J Am Vet Med Assoc (2004) 225:90–3.
- Warrington G, Dolan E, McGoldrick A, McEvoy J, MacManus C, Griffin M. Chronic weight control impacts on physiological function and bone health in elite jockeys. J Sports Sci (2009) 27:543–50.
- Ryan K, Brodine J. Weight-making practices among jockeys: an update and review of the emergent scientific literature. Open Access J Sports Med (2021) 12:87–98.
- Jeon S, Cho K, Ok G, Lee S, Park H. Weight loss practice, nutritional status, bone health, and injury history: a profile of professional jockeys in Korea. J Exerc Nutr Biochem (2018) 22:27.
- Dolan E, Cullen S, McGoldrick A, Warrington GD. The impact of making weight on physiological and cognitive processes in elite jockeys. Int J Sport Nutr Exerc Metab (2013) 23:399–408.
- Legg KA, Cochrane DJ, Bolwell CF, Gee EK, Rogers CW. Incidence and risk factors for race-day jockey falls over fourteen years. J Sci Med Sport (2020) 23:1154–60.
- Irandoust S., O'Neil L.M., Stevenson C.M., Franseen F.M., Ramzan P.H., Powell S.E.. Comparison of radiography and computed tomography for identification of third metacarpal structural change and associated assessment of condylar stress fracture risk in Thoroughbred racehorses. Equine Vet J (2024).
- Tranquille C, Parkin T, Murray R. Magnetic resonance imaging-detected adaptation and pathology in the distal condyles of the third metacarpus, associated with lateral condylar fracture in Thoroughbred racehorses. Equine Vet J (2012) 44:699–706.
- Tranquille C, Murray R, Parkin T. Can we use subchondral bone thickness on high-field magnetic resonance images to identify Thoroughbred racehorses at risk of catastrophic lateral condylar fracture?. Equine Vet J (2017) 49:167–71.
- Peloso JG, Cohen ND, Vogler JB, Marquis PA, Hilt L. Association of catastrophic condylar fracture with bony changes of the third metacarpal bone identified by use of standing magnetic resonance imaging in forelimbs from cadavers of thoroughbred racehorses in the United States. Am J Vet Res (2019) 80:178–88.
- Carrier TK, Estberg L, Stover SM, Gardner IA, Johnson BJ, Read DH. Association between long periods without high-speed workouts and risk of complete humeral or pelvic fracture in thoroughbred racehorses: 54 cases (1991-1994). J Am Vet Med Assoc (1998) 212:1582–7.
- Vallance SA, Entwistle RC, Hitchens PL, Gardner IA, Stover SM. Case-control study of high-speed exercise history of thoroughbred and quarter horse racehorses that died related to a complete scapular fracture. Equine Vet J (2013) 45:284–92.
- Whitton R, Walmsley E, Wong A, Shannon S, Frazer E, Williams N. Associations between pre-injury racing history and tibial and humeral fractures in Australian thoroughbred racehorses. Vet J (2019) 247:44–9.
- MacKinnon MC, Bonder D, Boston RC, Ross MW. Analysis of stress fractures associated with lameness in thoroughbred flat racehorses training on different track surfaces undergoing nuclear scintigraphic examination. Equine Vet J (2015) 47:296–301.
- Spriet M, Vandenberghe F. Equine nuclear medicine in 2024: use and value of scintigraphy and PET in equine lameness diagnosis. Animals (2024) 14:2499.
- Whitton R, Ayodele B, Hitchens P, Mackie E. Subchondral bone microdamage accumulation in distal metacarpus of thoroughbred racehorses. Equine Vet J (2018) 50:766–73.
- Wong AS, Morrice-West AV, Whitton RC, Hitchens PL. Changes in thoroughbred speed and stride characteristics over successive race starts and their association with musculoskeletal injury. Equine Vet J (2023) 55:194–204.
- Nath L, Stent A, Elliott A, La Gerche A, Franklin S. Risk factors for exercise-associated sudden cardiac death in thoroughbred racehorses. Animals (2022) 12:1297.
- Ter Woort F, Dubois G, Tansley G, Didier M, Verdegaal EL, Franklin S. Validation of an equine fitness tracker: ECG quality and arrhythmia detection. Equine Vet J (2023) 55:336–43.
- Kee P, Anderson N, Gargiulo GD, Velie BD. A synopsis of wearable commercially available biometric-monitoring devices and their potential applications during gallop racing. Equine Vet Educ (2023) 35:551–60.
- O'Connor S, Hitchens PL, Bolwell C, Annan R, McGoldrick A, Fortington LV. A cross sectional survey of international horse-racing authorities on injury data collection and reporting practices for professional jockeys. J Equine Vet (2021) 104:103686.
- Jeppesen A, Eyers R, Evans D, Ward MP, Quain A. Comparison of reported fatalities, falls and injuries in thoroughbred horse jumps and flat races in the 2022 and 2023 jumps race seasons in Victoria, Australia. Animals (2024) 14:804.
- Bimson NH, Morrice-West AV, Wong AS, Hitchens PL, Rocca MR, Whitton RC. Catastrophic musculoskeletal injuries in thoroughbred racehorses in Uruguay, 2011-2017. J Equine Vet (2022) 117:104074.
- O’Connor S, Warrington G, O’Brien S, McDermott E, McGoldrick A, Pugh J. Injuries outside of horseracing: is it time to focus on injury prevention of jockeys outside of races?. Phys Sportsmed (2021) 49:45–50.
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