Plica Syndrome

The medial plica is a structure that occurs normally in all knees.  In some cases, however, it can be injured and become thickened.  As a result it rubs on the medial (inner) condyle of the knee causing medial knee pain.


Painful plica rubbing on medial femoral condyle

Trimming a thick plica with a radiofrequency probe














This condition can sometimes be difficult to diagnose when it is confused with a meniscal tear and when an MRI scan shows no such tear.  Often a painful plica can be felt when the knee is examined in the clinic. 

Trimming the knee plica arthroscopically (through key-hole surgery) can cure this condition.