Cx5bB4PUkAATggw.jpgOne of the observations that I have made during my years in academic medicine is that the more popular a topic appears to be in the literature, the less likely we are to really understand it. After all, if we need to write about it so much, it must mean that there is still much to learn. This certainly seems to be the case with regard to injuries of the anterior cruciate ligament (ACL). ACL injuries are among the most common injuries sustained in the United States. Over 100,000 ACL reconstructions were performed in the United States in 2006, and the annual rate has continued to increase over time.

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