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Knee Injury Research Paper

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The knee is the largest joint in the human body, it is also one of the most stressed and complex. This makes it easy for injuries to happen. An estimated 6,664,324 knee injuries were presented to ER’s from 1999 through 2008, equaling 2.29 knee injuries per 1,000 individuals. The biggest age group with knee injuries during that time was 15-25 year olds.
Knee injuries are so common because of how complex the knee is. The knee is formed by three bones, the patella the tibia and the femur. In the knee there are two cartilage disks called menisci. These menisci give padding to the knee and allow it to glide smoothly. The knee is stabilized by tendons muscles and four important ligaments. The anterior cruciate ligament (ACL), posterior cruciate ligament (PCL), medial collateral ligament (PCL), and the lateral collateral ligament (MCL). …show more content…
It connects to the patella (kneecap) by the patellar tendon. The femur is the large bone in your thigh and it connects to the patella by the quadriceps tendon which connects to the quadriceps muscle. The quadriceps is the large muscle in your thigh. It helps stabilize the knee and helps you push off when you are moving. The cruciate ligaments (ACL and PCL) are called cruciate because they cross in the middle of the knee. The ACL prevents the tibia from sliding out in front of the femur while you’re moving, it also provides rotational support. The PCL prevents the femur from sliding off the front edge of the tibia and to prevent the tibia from displacing backwards to the femur. The collateral ligaments (MCL and LCL) help stabilize the knee. The MCL connects the femur to the tibia and is on the inside of your knee. The LCL connects the femur to the fibula (the smaller bone in your lower

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