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MR imaging findings in patients with a surgically significant mediopatellar plica

C Z Monabang1, M De Maeseneer, M Shahabpour

  • 1Dpt of Radiology, Vrije Universiteit Brussel, Jette, Belgium.

JBR-BTR : Organe De La Societe Royale Belge De Radiologie (SRBR) = Orgaan Van De Koninklijke Belgische Vereniging Voor Radiologie (KBVR)
|December 19, 2007
PubMed
Abstract

Insights

Significant plica diagnosis on MRI can be indicated by interposition across more than five transverse slices and focal fluid. These findings help identify plica requiring arthroscopic intervention.

Area of Science:

  • Orthopedic imaging
  • Knee arthroscopy
  • Medical diagnostics

Background:

  • Plica syndrome is a common cause of knee pain.
  • Accurate diagnosis of significant plica is crucial for effective treatment.
  • Magnetic Resonance (MR) imaging is a key tool in diagnosing knee pathologies.

Purpose of the Study:

  • To identify specific MR imaging findings associated with arthroscopically confirmed significant plica.
  • To differentiate between significant and non-significant plica based on MR characteristics.

Main Methods:

  • Retrospective review of MR imaging and arthroscopy reports from 450 patients.
  • Identification of nine patients with resected significant plica (study group) and nine controls.
  • Evaluation of MR imaging criteria: plica interposition, number of slices with interposition, presence and type of fluid, and plica thickening.

Main Results:

  • Plica interposition was observed on a mean of 5.9 slices in the study group versus 3 slices in the control group.
  • Plica thickening was noted in 4/9 study patients and 2/9 control patients.
  • Focal fluid adjacent to the plica was present in all study patients but none of the control patients.

Conclusions:

  • MR imaging findings of plica interposition on more than five transverse slices suggest significance.
  • The presence of focal fluid adjacent to the plica on MR imaging is a strong indicator of arthroscopically significant plica.

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