A retrospective case-control study was conducted to identify and quant
ify risk factors for serious musculoskeletal injury sustained at 4 Aus
tralian metropolitan racetracks. During the period of study (August 19
88-July 1995) there were 196 cases from flat racing, 52 cases from hur
dle racing and 53 cases from steeplechases. The incidences of fatal mu
sculoskeletal injuries per start for flat, hurdle and steeple races we
re 0.06, 0.63 and 1.43% respectively. Logistic regression identified h
arder track surfaces, horses being older than age 3 years, one racecou
rse (Flemington) and jumping races as significant risk factors which i
ncreased the risk of musculoskeletal breakdown. The incidence of fatal
musculoskeletal injuries for flat races at the 4 study tracks was sim
ilar to that reported in the UK but less than the USA. Death rates for
hurdle and steeple races in the study population were higher than in
the UK, Strategies to reduce the incidence of serious musculoskeletal
injuries may include avoidance of excessively hard track surfaces thro
ugh closer regulation of track moisture content; implementation of mor
e rigorous prerace lameness examinations of horses, particularly older
horses; and altering the design and number of jumps in hurdle and ste
eple races. The quantification of risk, as we have reported here, is t
he first step towards addressing the causes of musculoskeletal breakdo
wn and should help in applying a reasoned approach to intervention mea
sures that may be effective in reducing racing injuries.