

García-Valtuille R, Abascal F, Cerezal L et al. The Plica Syndrome: Diagnostic Value of MRI with Arthroscopic Correlation. Arthroscopic Resection of Medial Plica of the Knee in Young Adults. Weckström M, Niva M, Lamminen A, Mattila V, Pihlajamäki H. Clinical Diagnosis of Medial Plica Syndrome of the Knee: A Prospective Study. Shetty V, Vowler S, Krishnamurthy S, Halliday A. Medial Plica Syndrome: A Review of the Literature. Medial Plica Irritation: Diagnosis and Treatment. Sznajderman T, Smorgick Y, Lindner D, Beer Y, Agar G. Management options range from the conservative end of rest - physiotherapy to corticosteroid injections to arthroscopic surgery. In symptomatic patients, thickening of the medial plica and associated chondral defect of the medial patellar facet can be seen ref. Useful for identifying the presence of a plica and if it is thickened (typically appears like a shelf-like band). There can be fibrosis of a plica rendering it inflexible 8. The medial plica is the most common to be symptomatic 10. Plicae ≥1 mm may be present in over 70% of individuals and are mostly asymptomatic 8,9. Under certain circumstances, they carry the potential to become inflamed and symptomatic. Knee plicae are synovial invaginations which are thought to be remnants of embryological development. Localized tenderness +/- palpable band may be present along with a knee joint effusion 10. Patients may present with pain over the anteromedial aspect of the knees (mostly above the joint line 8) and this may be accompanied by episodes of crepitation, snapping, catching, popping 11, stiffness, and locking sensations 10. While it can affect those of any age, it typically involves the young patients (1st-3rd decades) of both sexes 10 involved in repetitive athletic activity ref.
