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Meniscal Root Injury
Andrew Sonin, MD, FACR
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KEY FACTS

  • Terminology

    • Imaging

      • Pathology

        • Clinical Issues

          • Diagnostic Checklist

            TERMINOLOGY

            • Synonyms

              • Meniscal root avulsion
              • Meniscal root tear
              • Posterior root tear
            • Definitions

              • Disruption of attachment site of meniscus to tibia, either anteriorly or, much more commonly, posteriorly

            IMAGING

            • General Features

              • MR Findings

                • Imaging Recommendations

                  DIFFERENTIAL DIAGNOSIS

                    PATHOLOGY

                    • General Features

                      • Gross Pathologic & Surgical Features

                        CLINICAL ISSUES

                        • Presentation

                          • Demographics

                            • Natural History & Prognosis

                              • Treatment

                                DIAGNOSTIC CHECKLIST

                                • Consider

                                  • Image Interpretation Pearls

                                    • Reporting Tips

                                      Selected References

                                      1. Bin SI et al: A new arthroscopic classification of degenerative medial meniscus root tear that correlates with meniscus extrusion on magnetic resonance imaging. Knee. ePub, 2015
                                      2. Bonasia DE et al: Meniscal root tear repair: why, when and how? Orthop Rev (Pavia). 7(2):5792, 2015
                                      3. Chung JY et al: Larger medial femoral to tibial condylar dimension may trigger posterior root tear of medial meniscus. Knee Surg Sports Traumatol Arthrosc. ePub, 2015
                                      4. Feucht MJ et al: Associated tears of the lateral meniscus in anterior cruciate ligament injuries: risk factors for different tear patterns. J Orthop Surg Res. 10:34, 2015
                                      5. Feucht MJ et al: Arthroscopic Transtibial Pullout Repair for Posterior Medial Meniscus Root Tears: A Systematic Review of Clinical, Radiographic, and Second-Look Arthroscopic Results. Arthroscopy. 31(9):1808-16, 2015
                                      6. Geeslin AG et al: Influence of lateral meniscal posterior root avulsions and the meniscofemoral ligaments on tibiofemoral contact mechanics. Knee Surg Sports Traumatol Arthrosc. ePub, 2015
                                      7. LaPrade CM et al: Biomechanical consequences of a nonanatomic posterior medial meniscal root repair. Am J Sports Med. 43(4):912-20, 2015
                                      8. LaPrade CM et al: Meniscal root tears: a classification system based on tear morphology. Am J Sports Med. 43(2):363-9, 2015
                                      9. Mariani PP et al: Avulsion of both posterior meniscal roots associated with acute rupture of the anterior cruciate ligament. J Orthop Traumatol. 16(3):259-62, 2015
                                      10. Matheny LM et al: Posterior meniscus root tears: associated pathologies to assist as diagnostic tools. Knee Surg Sports Traumatol Arthrosc. 23(10):3127-31, 2015
                                      11. Shybut TB et al: Effect of lateral meniscal root tear on the stability of the anterior cruciate ligament-deficient knee. Am J Sports Med. 43(4):905-11, 2015
                                      12. Takahashi K et al: Medial meniscal posterior root/horn radial tears correlate with cartilage degeneration detected by T1ρ relaxation mapping. Eur J Radiol. 84(6):1098-104, 2015
                                      13. Bhatia S et al: Meniscal root tears: significance, diagnosis, and treatment. Am J Sports Med. 42(12):3016-30, 2014
                                      14. Choi JY et al: Posterior medial meniscus root ligament lesions: MRI classification and associated findings. AJR Am J Roentgenol. 203(6):1286-92, 2014
                                      15. Mohankumar R et al: Meniscal ossicle: posttraumatic origin and association with posterior meniscal root tears. AJR Am J Roentgenol. 203(5):1040-6, 2014
                                      16. Nguyen JC et al: MR imaging-based diagnosis and classification of meniscal tears. Radiographics. 34(4):981-99, 2014
                                      17. Umans H et al: Posterior horn medial meniscal root tear: the prequel. Skeletal Radiol. 43(6):775-80, 2014
                                      18. Casagranda BU et al: Coronal oblique imaging of the knee: can it increase radiologists' confidence in diagnosing posterior root meniscal tears? Clin Radiol. 68(6):e316-22, 2013
                                      19. Papalia R et al: Meniscal root tears: from basic science to ultimate surgery. Br Med Bull. 106:91-115, 2013
                                      20. Sung JH et al: Meniscal extrusion and spontaneous osteonecrosis with root tear of medial meniscus: comparison with horizontal tear. Arthroscopy. 29(4):726-32, 2013
                                      21. Choi SH et al: The MRI findings of meniscal root tear of the medial meniscus: emphasis on coronal, sagittal and axial images. Knee Surg Sports Traumatol Arthrosc. 20(10):2098-2103, 2012
                                      22. Hwang BY et al: Risk factors for medial meniscus posterior root tear. Am J Sports Med. 40(7):1606-10, 2012
                                      23. Park HJ et al: Medial meniscal root tears and meniscal extrusion transverse length ratios on MRI. Br J Radiol. 85(1019):e1032-7, 2012
                                      24. Seil R et al: A clinical sign to detect root avulsions of the posterior horn of the medial meniscus. Knee Surg Sports Traumatol Arthrosc. 19(12):2072-5, 2011
                                      25. De Smet AA et al: MR diagnosis of posterior root tears of the lateral meniscus using arthroscopy as the reference standard. AJR Am J Roentgenol. 192(2):480-6, 2009
                                      26. Koenig JH et al: Meniscal root tears: diagnosis and treatment. Arthroscopy. 25(9):1025-32, 2009
                                      27. Robertson DD et al: Meniscal root injury and spontaneous osteonecrosis of the knee: an observation. J Bone Joint Surg Br. 91(2):190-5, 2009
                                      28. Lee SY et al: Radial tear of the medial meniscal root: reliability and accuracy of MRI for diagnosis. AJR Am J Roentgenol. 191(1):81-5, 2008
                                      29. Lee YG et al: Magnetic resonance imaging findings of surgically proven medial meniscus root tear: tear configuration and associated knee abnormalities. J Comput Assist Tomogr. 32(3):452-7, 2008
                                      30. Costa CR et al: Medial meniscus extrusion on knee MRI: is extent associated with severity of degeneration or type of tear? AJR Am J Roentgenol. 183(1):17-23, 2004
                                      Related Anatomy
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                                      Related Differential Diagnoses
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                                      References
                                      Tables

                                      Tables

                                      KEY FACTS

                                      • Terminology

                                        • Imaging

                                          • Pathology

                                            • Clinical Issues

                                              • Diagnostic Checklist

                                                TERMINOLOGY

                                                • Synonyms

                                                  • Meniscal root avulsion
                                                  • Meniscal root tear
                                                  • Posterior root tear
                                                • Definitions

                                                  • Disruption of attachment site of meniscus to tibia, either anteriorly or, much more commonly, posteriorly

                                                IMAGING

                                                • General Features

                                                  • MR Findings

                                                    • Imaging Recommendations

                                                      DIFFERENTIAL DIAGNOSIS

                                                        PATHOLOGY

                                                        • General Features

                                                          • Gross Pathologic & Surgical Features

                                                            CLINICAL ISSUES

                                                            • Presentation

                                                              • Demographics

                                                                • Natural History & Prognosis

                                                                  • Treatment

                                                                    DIAGNOSTIC CHECKLIST

                                                                    • Consider

                                                                      • Image Interpretation Pearls

                                                                        • Reporting Tips

                                                                          Selected References

                                                                          1. Bin SI et al: A new arthroscopic classification of degenerative medial meniscus root tear that correlates with meniscus extrusion on magnetic resonance imaging. Knee. ePub, 2015
                                                                          2. Bonasia DE et al: Meniscal root tear repair: why, when and how? Orthop Rev (Pavia). 7(2):5792, 2015
                                                                          3. Chung JY et al: Larger medial femoral to tibial condylar dimension may trigger posterior root tear of medial meniscus. Knee Surg Sports Traumatol Arthrosc. ePub, 2015
                                                                          4. Feucht MJ et al: Associated tears of the lateral meniscus in anterior cruciate ligament injuries: risk factors for different tear patterns. J Orthop Surg Res. 10:34, 2015
                                                                          5. Feucht MJ et al: Arthroscopic Transtibial Pullout Repair for Posterior Medial Meniscus Root Tears: A Systematic Review of Clinical, Radiographic, and Second-Look Arthroscopic Results. Arthroscopy. 31(9):1808-16, 2015
                                                                          6. Geeslin AG et al: Influence of lateral meniscal posterior root avulsions and the meniscofemoral ligaments on tibiofemoral contact mechanics. Knee Surg Sports Traumatol Arthrosc. ePub, 2015
                                                                          7. LaPrade CM et al: Biomechanical consequences of a nonanatomic posterior medial meniscal root repair. Am J Sports Med. 43(4):912-20, 2015
                                                                          8. LaPrade CM et al: Meniscal root tears: a classification system based on tear morphology. Am J Sports Med. 43(2):363-9, 2015
                                                                          9. Mariani PP et al: Avulsion of both posterior meniscal roots associated with acute rupture of the anterior cruciate ligament. J Orthop Traumatol. 16(3):259-62, 2015
                                                                          10. Matheny LM et al: Posterior meniscus root tears: associated pathologies to assist as diagnostic tools. Knee Surg Sports Traumatol Arthrosc. 23(10):3127-31, 2015
                                                                          11. Shybut TB et al: Effect of lateral meniscal root tear on the stability of the anterior cruciate ligament-deficient knee. Am J Sports Med. 43(4):905-11, 2015
                                                                          12. Takahashi K et al: Medial meniscal posterior root/horn radial tears correlate with cartilage degeneration detected by T1ρ relaxation mapping. Eur J Radiol. 84(6):1098-104, 2015
                                                                          13. Bhatia S et al: Meniscal root tears: significance, diagnosis, and treatment. Am J Sports Med. 42(12):3016-30, 2014
                                                                          14. Choi JY et al: Posterior medial meniscus root ligament lesions: MRI classification and associated findings. AJR Am J Roentgenol. 203(6):1286-92, 2014
                                                                          15. Mohankumar R et al: Meniscal ossicle: posttraumatic origin and association with posterior meniscal root tears. AJR Am J Roentgenol. 203(5):1040-6, 2014
                                                                          16. Nguyen JC et al: MR imaging-based diagnosis and classification of meniscal tears. Radiographics. 34(4):981-99, 2014
                                                                          17. Umans H et al: Posterior horn medial meniscal root tear: the prequel. Skeletal Radiol. 43(6):775-80, 2014
                                                                          18. Casagranda BU et al: Coronal oblique imaging of the knee: can it increase radiologists' confidence in diagnosing posterior root meniscal tears? Clin Radiol. 68(6):e316-22, 2013
                                                                          19. Papalia R et al: Meniscal root tears: from basic science to ultimate surgery. Br Med Bull. 106:91-115, 2013
                                                                          20. Sung JH et al: Meniscal extrusion and spontaneous osteonecrosis with root tear of medial meniscus: comparison with horizontal tear. Arthroscopy. 29(4):726-32, 2013
                                                                          21. Choi SH et al: The MRI findings of meniscal root tear of the medial meniscus: emphasis on coronal, sagittal and axial images. Knee Surg Sports Traumatol Arthrosc. 20(10):2098-2103, 2012
                                                                          22. Hwang BY et al: Risk factors for medial meniscus posterior root tear. Am J Sports Med. 40(7):1606-10, 2012
                                                                          23. Park HJ et al: Medial meniscal root tears and meniscal extrusion transverse length ratios on MRI. Br J Radiol. 85(1019):e1032-7, 2012
                                                                          24. Seil R et al: A clinical sign to detect root avulsions of the posterior horn of the medial meniscus. Knee Surg Sports Traumatol Arthrosc. 19(12):2072-5, 2011
                                                                          25. De Smet AA et al: MR diagnosis of posterior root tears of the lateral meniscus using arthroscopy as the reference standard. AJR Am J Roentgenol. 192(2):480-6, 2009
                                                                          26. Koenig JH et al: Meniscal root tears: diagnosis and treatment. Arthroscopy. 25(9):1025-32, 2009
                                                                          27. Robertson DD et al: Meniscal root injury and spontaneous osteonecrosis of the knee: an observation. J Bone Joint Surg Br. 91(2):190-5, 2009
                                                                          28. Lee SY et al: Radial tear of the medial meniscal root: reliability and accuracy of MRI for diagnosis. AJR Am J Roentgenol. 191(1):81-5, 2008
                                                                          29. Lee YG et al: Magnetic resonance imaging findings of surgically proven medial meniscus root tear: tear configuration and associated knee abnormalities. J Comput Assist Tomogr. 32(3):452-7, 2008
                                                                          30. Costa CR et al: Medial meniscus extrusion on knee MRI: is extent associated with severity of degeneration or type of tear? AJR Am J Roentgenol. 183(1):17-23, 2004