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Australia tops the world for rates of common sports injury

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Australia has the highest reported rates of anterior cruciate ligament (ACL) injury in the world, and the rate has risen 70 per cent in under 25s over the last 15 years, according to Australian research. Between 2000 and 2015, almost 200,000 primary ACL reconstructions were performed in Australia and the injury is now costing the hospital system an estimated $142 million a year. Rupture of the ACL is a common injury in sports such as AFL, rugby and netball and the rise is thought to be down to earlier specialisation by younger athletes, longer sporting seasons, more intense training, higher level of competition, and a lack of free play.

Journal/conference: Medical Journal of Australia

DOI: 10.5694/mja17.00974

Organisation/s: Griffith University, The University of Sydney, Knee Research Australia

Media Release

From: Medical Journal of Australia (MJA)

ALARMING RISES IN ANTERIOR CRUCIATE LIGAMENT INJURY AND RECONSTRUCTION AMONG YOUNG AUSTRALIANS

DESPITE anterior cruciate ligament (ACL) injury being a largely preventable sporting injury that typically leads to lifelong repercussions, including osteoarthritis, Australia has the highest reported rates of ACL injury and reconstruction in the world. Over the past 15 years, the rate of reconstruction in Australians under 25 years of age has risen more than 70%, with the greatest increase among children under 14, according to research published in the Medical Journal of Australia.

Between July 2000 and June 2015, 197 557 primary ACL reconstructions were performed, according to the researchers, led by Associate Professor Christopher Vertullo, director of Knee Research Australia and Chair of the Australian Orthopaedic Association Youth Sports Injury Prevention Initiative.

“The annual incidence increased by 43% (from 54.0 to 77.4 per 100 000 population), and by 74% among those under 25 years of age (from 52.6 to 91.4 per 100 000 population). In males, the peak incidence in 2014–15 was for 20–24-year-olds (283 per 100 000 population); for females, it was for 15–19-year-olds (164 per 100 000 population).

“Annual growth in incidence was greatest in the 5–14-year-old age group (boys, 7.7%; girls, 8.8%).

“Direct hospital costs of ACL reconstruction surgery in 2014–15 were estimated to be $142 million.

Rupture of the ACL is a common injury that typically results from a non-contact event in which a previously healthy individual changes direction at speed while playing a multi-directional sport, such as AFL, rugby union, rugby league, netball, basketball, soccer, or skiing.

“The rise of ACL injury in young people has been attributed to earlier specialisation by younger athletes, longer sporting seasons, more intense training, higher level of competition, and a lack of free play.

“The short-term consequences of ACL rupture include the inability to participate in sport, reconstructive surgery, and prolonged rehabilitation. In the long term … almost all individuals who tear an ACL are at increased risk of osteoarthritis and disability, and this risk is substantially increased by concurrent meniscal injury.” While reconstruction has a high success rate, it doesn't make the knee normal again.

Vertullo and colleagues highlight the fact that 20 years of research has shown that ACL injuries are preventable through regular neuromuscular agility training programs that could avert 50–80% of ACL injuries.

The authors emphasise that “prevention is much more cost-effective than either ACL reconstruction or rehabilitation. Establishing a national ACL injury prevention program has been reported as a cost-effective strategy for improving sporting health outcomes for young Australians.”

“The increasing incidence of ACL injury in Australia is an emerging public health problem with potentially detrimental long term health outcomes, especially for young people,” they concluded.

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The Medical Journal of Australia is a publication of the Australian Medical Association

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