**4.2 Clinical features**

The patients usually come with severe posterior knee pain while flexing of the knee over 70° to 90°, which increases posterior translation of the tibia. This is seen when the PCL stump from the intercondylar notch gets entrapped in the medial tibio-femoral joint, resulting in severe posterior pain. This residual stump can get incarcerated and interfere with cam mechanism of the knee preventing any further flexion.
