Genu recurvatum involves disruption of which ligament?

Genu recurvatum refers to a condition where there is an excessive extension or backward bending of the knee joint. This can lead to instability and is often associated with the involvement of specific ligaments around the knee. One of the key ligaments that plays a role in controlling the posterior stability of the knee is the posterior cruciate ligament (PCL).

The PCL is responsible for preventing the tibia from translating too far posteriorly relative to the femur, particularly during activities that require bending the knee. When genu recurvatum occurs, the PCL may be stretched or torn due to the abnormal hyperextension of the knee, which compromises the structural integrity of the joint. Damage to the PCL can lead to further instability and complications, making it the ligament most directly associated with this specific condition.

On the other hand, the anterior cruciate ligament (ACL) primarily controls anterior movement of the tibia and stability during flexion but does not directly relate to the posterior instability seen in genu recurvatum. The medial collateral ligament (MCL) provides stability against lateral forces but is not primarily affected in this condition either. The patellar ligament, while contributing to the overall stability of the knee, does not specifically relate to the hyper