Paul Cassell blogs about the problem of ACL injuries in female athletes. I have a simple solution that will never work. Make girls lift weights. It's really that simple. It's banal to those in the know to note that load-bearing exercise (i.e., weights; none of that pilates or Yoga stuff) strengthens ligaments.
But have you ever tried getting a girl to lift weights?
"I don't want to look like a guy" or "I don't want to get too muscular" in all their various forms is all you'll hear. As someone who has lifted for years, I only wish it were that easy! It actually takes years to build a muscular physique. I beat my head up against a wall having that conversation with my wife. I gave up. Some things are too culturally ingrained in the female psyche.
So, as is often the case, there is a simple solution to a major problem. But the solution will never work. Go figure.