Importance Of The Posterior Cruciate Ligament

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The Posterior Cruciate Ligament (PCL) is located in the knee behind the Anterior Cruciate Ligament (ACL). It is the strongest ligament in the knee and is important in knee stability. The two cruciate ligaments which cross each other to form an “X”, control the back and forth motion of your knee. A ligament is a tough, relatively inelastic band of tissue that connects one bone to another. As one of five ligaments in the knee, the PCL connects the femur to the tibia and prevents the tibia from sliding backwards. More specifically, the PCL helps to maintain proper alignment of the femur and tibia and keeps them in place so that it doesn 't slip over the femur and cause the knee to buckle, lock, or collapse. It also helps to prevent the tibia …show more content…
PCL injuries, which are not as common as ACL injuries, account for 20% of knee ligament injuries. This is because it is thicker and stronger than the other ligaments. They are also more difficult to evaluate than other ligament injuries in the knee and often times go undiagnosed. Many times a PCL injury comes with other injuries to other ligaments, bones and cartilage. It is often associated with ACL tears, MCL tears, LCL tears, meniscus tears, and articular cartilage damage. It can also be linked to posterior rotatory instability and knee …show more content…
Patients often describe it as a popping feeling and complain of instability of the joint. This makes walking difficult and gives the patient the feeling as if the knee might “give out”. Pain may radiate down into the calf region. Bending the knee recreates the pain. To check an athlete for a possible pcl injury an athletic trainer can preform special physical exam tests. The most reliable is the posterior drawer test, which stresses the pcl by pushing the tibia backwards with a bent knee. If the pcl is injured, the tibia will slide too far backward and indicate an injury to the posterior cruciate ligament. Other special tests that check the pcl are the Reverse Lachman’s Test, Godfrey’s Test, Recurvatum Test, and the Quadriceps Active

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