FIFA Women's World Cup: What is the knee injury keeping players out?

As the Women's World Cup kicks off in Australia and New Zealand, up to 30 players won't be playing due to the same knee injury.

Star players, including England's Beth Mead and captain Leah Williamson, are all suffering from anterior cruciate ligament (ACL) injuries that threaten their careers in the game.

And women are 3.5 times more likely to suffer this type of injury compared to their male counterparts.

Sky News' data and forensics correspondent Tom Cheshire has investigated why female players are more likely to sustain these injuries

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