Two positioned MRI can visualize and detect the location of peripheral rim instability with snapping knee in the no-shift-type of complete discoid lateral meniscus
| Autor: | Kazuya Nishino, Yohei Nishida, Hiroaki Nakamura, Shinji Takahashi, Yusuke Hashimoto, Shinya Yamasaki |
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| Rok vydání: | 2021 |
| Předmět: |
Discoid lateral meniscus
Knee Joint medicine.diagnostic_test business.industry Magnetic resonance imaging General Medicine Magnetic Resonance Imaging Menisci Tibial Predictive value Instability Peripheral Arthroscopy medicine Snapping knee Humans Orthopedics and Sports Medicine Surgery Full extension Joint Diseases Nuclear medicine business Cartilage Diseases Mri findings |
| Zdroj: | Archives of Orthopaedic and Trauma Surgery. 142:1971-1977 |
| ISSN: | 1434-3916 |
| DOI: | 10.1007/s00402-021-04148-9 |
| Popis: | We evaluated the efficacy of two positioned magnetic resonance imaging (MRI) for visualizing the snapping phenomenon and detecting peripheral rim instability (PRI) in no-shift-type complete discoid lateral meniscus (CDLM). The records of 39 patients diagnosed with no-shift-type CDLM under routine MRI who underwent arthroscopic surgery were reviewed. The snapping phenomenon and meniscal shift on two positioned MRI in full extension and deep flexion were evaluated and calculated the agreement between these findings. The positive predictive value (PPV), sensitivity, and specificity of meniscal shift on two positioned MRI for predicting PRI were calculated; PRI was further investigated according to anterior and posterior location. The hypotheses of this study were asfollows: (1) Two positioned MRI can visualize the snapping phenomenon and (2) Meniscal shift on two positioned MRI is an important predictive sign of detecting the instability site in no-shift-type CDLM. The κ values between the snapping phenomenon and meniscal shift on two positioned MRI were 0.84. The snapping and two positioned MRI findings had high PPV (1.0, 0.96), sensitivity (0.82, 0.85), and specificity (1.0, 0.91) for predicting overall PRI. For anterior PRI, the snapping and posterior shift on two positioned MRI had moderate and high PPV (0.78, 0.9), high sensitivity (0.9, 0.9), and specificity (0.8, 0.89). The anterior shift on two positioned MRI findings predicted posterior PRI with high PPV (1.0) and specificity (1.0). Two positioned MRI visualized the snapping phenomenon. Meniscal shift on two positioned MRI was an important predictive sign of overall PRI, anterior PRI, and posterior PRI in no-shift-type CDLM. |
| Databáze: | OpenAIRE |
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