Michael Salata, MD, discusses a knee injury case. MICHAEL SALATA: The first thing that we're going to talk about is a knee injury case presentation. So why is this important? We know that there are a lot of our female athletes getting into trouble with injuries. It's a public health issue. This tremendously affects a young person's outlook on their life and having involvement in a sport or team sport can be very important. So getting these patients back from an injury back to that level of play that they're accustomed to, is a very important thing. And we're going to talk about that a little bit, see if this video will play. So this is just an example of how-- of what we see sometimes. As sports medicine providers, we're often on the field or in the gym when these patients get injured, so you can see the injury happen real time. And so here you can see when they land, something happens with their knee. They grab it and they're down in a heap. And then the question, is how do we take them from that particular injury to the next phase? Another thing that can occur-- that's one injury that we'll talk about a little bit today in our presentations. Another injury that you can see sometimes, is you can see this. And so when someone goes down, there's some injury to the knee, they're sitting on the ground and you have to try and figure out exactly what happened and how you take them from this-- how you take them back to play. So ACL injury, we'll briefly touch on it. Females are at least two to six times higher risk, compared to their male counterparts. College athletes are at higher risk than high school athletes. So as you get farther advanced into the level of play, the risk goes up. Soccer is the highest risk sport fall by rugby, basketball, and lacrosse, for ACL injuries. Injury prevention programs have been shown to decrease ACL tear rates and we have some experts that are going to talk to you about that today. Patellar instability is another thing that we're going to be talking about. The incidence of primary patellar dislocation is about 5.8 per 100,000, and about 29 per 100,000 in the 10 to 17-year-old range. So these are our young, adolescent athletes that are getting injured. Recurrent rates after nonoperative treatment vary, but can be as high as 50%. And the highest risk factor for subsequent dislocations is a previous dislocation in the knee. Natural history of patellar instability-- everyone's going to touch on this in their talks in the next couple slides, so I'm just setting this up for everyone-- but about 55% of people can fail to return to sports activity. And so the question is how-- and what we're going to talk about in the next couple of slides is-- how do we get the player, being down like you saw, they have some kind of an injury, they're crumpled in a heap, and then how do you get them back to the bottom of the slide there, where they get back to play? So we really appreciate your time and support here. And hopefully we can shed some light on how we can take those people from that acute injury setting, all the way back to sport.