What Is The Cause Of A Posterior Cruciate Ligament Injury?
The posterior cruciate ligament is the strongest in the knee joint. It is known as posterior because it passes through the back of the knee. It connects the tibia with the femur and together with the anterior cruciate, they maintain the stability of the area. They both intersect inside and form an X in the center of the joint.
Posterior cruciate ligament injuries occur less frequently than anterior cruciate injuries. The latter is considered the most vulnerable.
Usually there is less pain and instability, but the disability can last for several weeks or months. Here is more information.
Symptoms of posterior cruciate ligament injury
Most people with a posterior cruciate ligament injury experience immediate pain and swelling afterward. The sensation they describe is that the knee feels weak and limp , as if it will not support the person’s weight.
The pain can be severe and may be accompanied by difficulty walking, so there may be a limp. Although it is also important to note that the symptoms of a posterior cruciate ligament injury can be so mild that they may go unnoticed.
Over time, pain begins to appear or the knee begins to feel unstable. This is when the person seeks medical attention and discovers that they were injured long ago.
Degrees of injury
Posterior cruciate ligament injury is classified according to the size of the displacement of the bones in the knee joint. The degrees of injury are divided as follows:
- First degree or partial: it involves a backward displacement of the shin of 1 to 5 millimeters.
- Second degree or complete: in this case, the backward displacement of the shin is 6 to 10 millimeters.
- Third degree: the rearward displacement of the shin is greater than 10 millimeters of translation. With high frequency, it indicates that there is injury to the anterior and posterior cruciate ligament.