Understanding the differences between male and female athletes in the treatment of sports injuries

Across the world, there has been an explosion in the number of girls and women engaging in sports traditionally considered male pursuits. Unsurprisingly, this has also led to a rise in new sports-related injuries. Doctors and surgeons need to be aware that, when it comes to treatment and prevention, the sexes are not the same.

Not so very long ago, in the US at least, doctors and PHDs considered it unethical to do medical research on women. Thankfully those times are past and nowadays many journals won’t even publish research unless its divides up the sexes and includes data on gender discrepancies. However, it remains a fact that historically, we haven’t had the kind of research on women in sports that we’ve had on men.  

Things are undoubtedly getting better, not least because of the increased number of women participating in once male-dominated sports—American football, Australian Rules football, soccer, rugby, basketball, wrestling etc.—and the resultant rise in sports injuries. At a collision sports meeting in Stockholm in 2019, one Aussie Rules football coach was staggered at the number of his young female players who were falling victim to anterior cruciate ligament (ACL) injuries. Indeed, research has shown that young female basketball players are eight times more likely to suffer ACL problems than their male counterparts of a similar age.   

The knee is not, of course, the only source of sporting injuries in women but it has a high incidence factor and if we are going to properly treat such injuries (or better still, prevent them altogether), we need to be aware of certain factors that are critical to female athletes. 

Muscle mass and hyperlaxity

Before boys and girls hit puberty, their injury risk is similar. They have the same bone strength, same hormone levels, same muscular strength. Things really start to change at puberty when boys start producing testosterone and girls begin producing estrogen, progesterone, and other hormones. 

The difference with boys is that testosterone production also helps to grow the muscle mass they need to keep up with the demands put on their bodies. Girls do not grow muscle mass as quickly—particularly in the quads, hamstrings, and glutes—so they must work much harder to gain muscle mass through strength, conditioning, and performance training. 

Another factor is that girls tend to develop muscles asymmetrically (for example, they’re often more dominant in one leg than the other), whereas boys tend to develop muscles equally. This means that girls can be more imbalanced than boys when it comes to performing tasks and sports. Also, girls tend to be quad dominant. Their quads are stronger than their hamstrings, but it is the hamstring that is most protective of the ACL. 

And in general, women’s core strength simply isn’t as strong as men’s, yet core muscles such as the abs and glutes are key for injury prevention because they allow the body to react in time and can absorb some of the stress that’s going through the knee. Obviously as athletes get older there is not so much of a shock to the system anterior cruciate ligament but there are still differences in muscle mass between the genders. 

Those muscle imbalances make the knee particularly vulnerable to injury, especially in sports that require a lot of pivoting and cutting, but other joints are also susceptible. Instability in the ankle causes lots of problems. Girls and women have much more hyperlaxity (looseness of the joints) than men, and this is where the hips and shoulders come into play. We see a lot of hip dysplasia in ballerinas and gymnasts. They have super flexible hips which can cause problems within the hip structure—labral tears in hips (and shoulders) are common in female athletes who have increased flexibility. 

Hormonal Impact

The effects of hormone change on female performance should also not be underestimated. They affect not only muscle density but also bone density and reaction time. In fact, research has shown that women’s reaction times in general are strongly influenced by where they are in their menstrual cycle—usually slower around ovulation—which is important in sports such as tennis. 

Another factor that comes into play is relative energy deficiency syndrome (RED-S), which has a much higher occurrence in female athletes than in males. It’s basically that many young women are not getting the level of nutrition required for their sport. We’re not talking bulimia, anorexia or other eating disorders – it’s simply that they underestimate (or don’t have access to) the nutrition they need. Sometimes this can simply be a matter of, say, college canteens not being open after athletes have finished their practice, so they are not properly refueling. 

RED-S leads to complications such as lower bone density, a disrupted menstrual cycle, even hip stress fractures (a devastating injury that can put you off your feet for a considerable time.) We’ve seen it a lot in female mid-field soccer players, for example, where they are running the equivalent of six miles every game and don’t realize they are not consuming enough calories, or the right kind of calories, to compensate for that level of activity. 

Sports such as figure skating or gymnastics also have an added appearance-related factor. Female athletes are more attuned to what their bodies look like. They want to perform well but they also want a slimmer appearance which may account for a higher incidence of RED-S in female competitors – even in sports such as cross-country running where being a lower weight benefits both sexes.

Bone health and nutrition are directly related to the regulation of hormones. If you’re not getting appropriate hormone levels, your bones are not being protected. Whereas there’s a much more protective effect for male athletes whose testosterone and increased muscle mass means they’re not as