Synovial plicae (knee)

Synovial plicae are thought to represent embryologic remnants and are common, being present in ~90% of the population at arthroscopy 3

They have been implicated in anterior knee pain and possibly in chondromalacia patellae although their role remains controversial 1,3

Some plicae have been described with multiple names in the literature representing the same structure 1, 2:

They range in shape from a ridge or shelf to more discrete cord-like structure 3

MRI
  • PD/T2: typically seen as a band-like low signal structure traversing through the joint space (arthrography study or when joint effusion is present)

Lower limb anatomy
Share article

Article Information

rID: 9174
Section: Anatomy
Tags: knee, variant
Synonyms or Alternate Spellings:
  • Plicae of the knee
  • Plica of the knee
  • Synovial plica of the knee

Support Radiopaedia and see fewer ads

Cases and Figures

  • Drag
    Case 1: medial plica with patella cartilage defect
    Drag here to reorder.
  • Drag
    Case 2: medial plica
    Drag here to reorder.
  • Drag
    Case 3: superior patella plica
    Drag here to reorder.
  • Drag
    Case 4: septum completum with haemarthrosis
    Drag here to reorder.
  • Drag
    Medial plica
    Case 5: medial plica
    Drag here to reorder.
  • Drag
    Case 6: infrapatellar plica injury
    Drag here to reorder.
  • Drag
    Case 7: suprapatella plica syndrome
    Drag here to reorder.
  • Updating… Please wait.
    Loadinganimation

    Alert accept

    Error Unable to process the form. Check for errors and try again.

    Alert accept Thank you for updating your details.