- The medial patella plica is a developmental synovial membrane remnant.
- Can be seen in up to 30% of knees.

- It can be completely asymptomatic but can extend between the patella and trochlea and be compressed and cause pain. This is seen in so called Patella Plica Syndrome.
- May also have chondromalacia in the adjacent patella and trochlea facet.

- A normal plica as shown is well defined and low signal.
- It is found in the superomedial aspect of the joint and is best seen on axial scans.
- With compression it will be thickened and ill defined and increase in signal.




