The three letters athletes dread: What’s an ACL injury?

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Explainer: Athletes dread hearing those three letters. ACL injuries are on the rise in Australia but how do they happen and how can you avoid one? | ameliamcguiree

or some it’s excruciating, others just hear a “pop”. One thing is for sure: once someone has ruptured their ACL they’re unlikely to just walk away – it can be quite literally impossible to bear weight.

ACL tears are a worry for recreational sportspeople, too. Knee troubles overall were the second-most common sports injury to land people in hospital in Australia between 2011-12 and 2018-19, according to the Australian Institute of Health and Welfare.Over that time, the number of soccer players ending up in hospital with an ACL injury doubled. ACLs accounted for one in 10 soccer injuries requiring hospital treatment. Nearly one in five touch football injuries were ACL ruptures.

According to Gibbs, there are two main reasons that athletes incur ACL injuries: they have either a genetic predisposition due to weakened collagen, or their co-contracting muscles have failed to protect the knee when sidestepping or changing direction while playing. Those who have “inherent weakness” in the collagen that acts as the connective tissue of the ACL are at “high risk” of doing both knees, but it’s difficult to tell whether this is the case until the first injury is incurred.

“If you were to look at the number of ACL ruptures per head of population it’s higher in females than males,” said Cossetto, who had just finished operating on a skier in her early 30s. While the gender imbalance is influenced by a difference in hormones, it’s not yet known whether it’s also caused by the difference in strength in men and women or the physical differences in their lower extremity alignment.

Then there’s re-rupturing your ACL. Those who are genetically predisposed often do their other knee after they’ve recovered from their first injury. Those who aren’t genetically predisposed still risk re-rupture if they continue to engage in the activity that caused the injury.

 

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ameliamcguiree Talking about ACLs bit showing a pic of bone on bone degeneration? HAHAHA

ameliamcguiree The typical young person who suffers a torn ACL is going to get a very rude shock over the next few months when they find themselves competing for hospital beds with Covid patients.

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