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Medial Patellar Plica Syndrome
Andrew Sonin, MD, FACR
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KEY FACTS

  • Terminology

    • Imaging

      • Top Differential Diagnoses

        • Pathology

          • Clinical Issues

            TERMINOLOGY

            • Synonyms

              • Medial shelf, Aoki edge, Iino's band
            • Definitions

              • Inflammation of medial parapatellar plica causing knee pain and crepitus

            IMAGING

            • General Features

              • MR Findings

                • Ultrasonographic Findings

                  • Imaging Recommendations

                    DIFFERENTIAL DIAGNOSIS

                      PATHOLOGY

                      • General Features

                        • Staging, Grading, & Classification

                          • Gross Pathologic & Surgical Features

                            • Microscopic Features

                              CLINICAL ISSUES

                              • Presentation

                                • Treatment

                                  DIAGNOSTIC CHECKLIST

                                  • Consider

                                    • Image Interpretation Pearls

                                      Selected References

                                      1. Vassiou K et al: Synovial plicae of the knee joint: the role of advanced MRI. Postgrad Med J. 91(1071):35-40, 2015
                                      2. Samim M et al: MRI of anterior knee pain. Skeletal Radiol. 43(7):875-93, 2014
                                      3. Zbojniewicz AM: US for diagnosis of musculoskeletal conditions in the young athlete: emphasis on dynamic assessment. Radiographics. 34(5):1145-62, 2014
                                      4. Bellary SS et al: Medial plica syndrome: a review of the literature. Clin Anat. 25(4):423-8, 2012
                                      5. Al-Hadithy N et al: Review article: Plica syndrome of the knee. J Orthop Surg (Hong Kong). 19(3):354-8, 2011
                                      6. Paczesny L et al: Medial plica syndrome of the knee: diagnosis with dynamic sonography. Radiology. 251(2):439-46, 2009
                                      7. Shetty VD et al: Clinical diagnosis of medial plica syndrome of the knee: a prospective study. J Knee Surg. 20(4):277-80, 2007
                                      8. Kim SJ et al: MPP test in the diagnosis of medial patellar plica syndrome. Arthroscopy. 20(10):1101-3, 2004
                                      9. Calpur OU et al: Arthroscopic mediopatellar plicaectomy and lateral retinacular release in mechanical patellofemoral disorders. Knee Surg Sports Traumatol Arthrosc. 10(3):177-83, 2002
                                      10. Jee WH et al: The plica syndrome: diagnostic value of MRI with arthroscopic correlation. J Comput Assist Tomogr. 22(5):814-8, 1998
                                      11. Dupont JY: Synovial plicae of the knee. Controversies and review. Clin Sports Med. 16(1):87-122, 1997
                                      12. Strover AE et al: An arthroscopic technique of demonstrating the pathomechanics of the suprapatellar plica. Arthroscopy. 7(3):308-10, 1991
                                      13. O'Dwyer KJ et al: The plica syndrome. Injury. 19(5):350-2, 1988
                                      14. Broom MJ et al: The plica syndrome: a new perspective. Orthop Clin North Am. 17(2):279-81, 1986
                                      15. Muse GL et al: Arthroscopic treatment of medial shelf syndrome. Arthroscopy. 1(1):63-7, 1985
                                      16. Mital MA et al: Pain in the knee in children: the medial plica shelf syndrome. Orthop Clin North Am. 10(3):713-22, 1979
                                      Related Anatomy
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                                      Related Differential Diagnoses
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                                      References
                                      Tables

                                      Tables

                                      KEY FACTS

                                      • Terminology

                                        • Imaging

                                          • Top Differential Diagnoses

                                            • Pathology

                                              • Clinical Issues

                                                TERMINOLOGY

                                                • Synonyms

                                                  • Medial shelf, Aoki edge, Iino's band
                                                • Definitions

                                                  • Inflammation of medial parapatellar plica causing knee pain and crepitus

                                                IMAGING

                                                • General Features

                                                  • MR Findings

                                                    • Ultrasonographic Findings

                                                      • Imaging Recommendations

                                                        DIFFERENTIAL DIAGNOSIS

                                                          PATHOLOGY

                                                          • General Features

                                                            • Staging, Grading, & Classification

                                                              • Gross Pathologic & Surgical Features

                                                                • Microscopic Features

                                                                  CLINICAL ISSUES

                                                                  • Presentation

                                                                    • Treatment

                                                                      DIAGNOSTIC CHECKLIST

                                                                      • Consider

                                                                        • Image Interpretation Pearls

                                                                          Selected References

                                                                          1. Vassiou K et al: Synovial plicae of the knee joint: the role of advanced MRI. Postgrad Med J. 91(1071):35-40, 2015
                                                                          2. Samim M et al: MRI of anterior knee pain. Skeletal Radiol. 43(7):875-93, 2014
                                                                          3. Zbojniewicz AM: US for diagnosis of musculoskeletal conditions in the young athlete: emphasis on dynamic assessment. Radiographics. 34(5):1145-62, 2014
                                                                          4. Bellary SS et al: Medial plica syndrome: a review of the literature. Clin Anat. 25(4):423-8, 2012
                                                                          5. Al-Hadithy N et al: Review article: Plica syndrome of the knee. J Orthop Surg (Hong Kong). 19(3):354-8, 2011
                                                                          6. Paczesny L et al: Medial plica syndrome of the knee: diagnosis with dynamic sonography. Radiology. 251(2):439-46, 2009
                                                                          7. Shetty VD et al: Clinical diagnosis of medial plica syndrome of the knee: a prospective study. J Knee Surg. 20(4):277-80, 2007
                                                                          8. Kim SJ et al: MPP test in the diagnosis of medial patellar plica syndrome. Arthroscopy. 20(10):1101-3, 2004
                                                                          9. Calpur OU et al: Arthroscopic mediopatellar plicaectomy and lateral retinacular release in mechanical patellofemoral disorders. Knee Surg Sports Traumatol Arthrosc. 10(3):177-83, 2002
                                                                          10. Jee WH et al: The plica syndrome: diagnostic value of MRI with arthroscopic correlation. J Comput Assist Tomogr. 22(5):814-8, 1998
                                                                          11. Dupont JY: Synovial plicae of the knee. Controversies and review. Clin Sports Med. 16(1):87-122, 1997
                                                                          12. Strover AE et al: An arthroscopic technique of demonstrating the pathomechanics of the suprapatellar plica. Arthroscopy. 7(3):308-10, 1991
                                                                          13. O'Dwyer KJ et al: The plica syndrome. Injury. 19(5):350-2, 1988
                                                                          14. Broom MJ et al: The plica syndrome: a new perspective. Orthop Clin North Am. 17(2):279-81, 1986
                                                                          15. Muse GL et al: Arthroscopic treatment of medial shelf syndrome. Arthroscopy. 1(1):63-7, 1985
                                                                          16. Mital MA et al: Pain in the knee in children: the medial plica shelf syndrome. Orthop Clin North Am. 10(3):713-22, 1979