The various plicae of the knee.
The medial plica can become nipped between femur and patella, with resultant pain.
Surgery for plica syndrome
Surgery may be indicated when the patient repetitively experiences symptoms, which may include:
- inflammation of a plica, due to an impact injury
- nipping of a mediopatellar plica between femur and patella
- nipping of a suprapatellar plica between femur and the quads tendon
- inflammation of the Hoffa fat pad, when a tethered infrapatellar plica is subjected to increased stresses, such as with an adolescent growth spurt
The procedure is usually arthroscopic (keyhole).
Synovial Plica Syndrome of the Knee: A Commonly Overlooked Cause of Anterior Knee Pain. Lee PYF, Nixion A, Chandratreya A and Murray JM. Surg J (N Y). 2017 Jan; 3(1): e9–e16.