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| MUSCULOSKELETAL |
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| Year : 2004 |
Volume
: 14 | Issue : 1 | Page
: 33-40 |
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MR Imaging of knee with arthroscopic correlation in twisting injuries
JP Singh, L Garg, R Shrimali, V Setia, V Gupta
Mohan Dai Oswal Cancer Hospital, G.T. Road, Sherpur by Pass, Ludhiana, India
Correspondence Address:
J P Singh
82, New Mehar Singh Colony, Tripari, Patiala, Punjab
India
 Source of Support: None, Conflict of Interest: None  | Check |
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The purpose of this study is to study MRI appearances of meniscal and cruciate ligament injuries of knee. Know the role of different sequences in diagnosing these injuries. Compare the MRI findings with arthroscopic findings and appearances reported in literature. The objective is also to study limitations of MRI in detecting meniscal and cruciate ligament injuries of the knee. Materials and Methods: One hundred and seventy three patients with history of twisting injuries to the knee and suspected to have meniscal and/or cruciate ligamentous tears have been studies using Signa Contour (GE) MR machine with a superconducting magnet and field strength of 0.5 tesla using a Quadrature (QD) extremity coil. Sequences and planes used were spin echo T1, fast spin echo T2, Gradient Echo (GRE) and Short Tau Inversion Recovery (STIR) in direct coronal, sagittal and axial planes using 4mm slice thickness. Patient was placed supine with knee externally roated 15-20 degree minues and flexed 5-10 degree minues. Results: Sensitivity, Specificity and Accuracy of MRI in detecting meniscal and cruciate ligamentous injuries as compared to arthroscopy is as follows: Medial Meniscus (MM): 96.5 percent,98.28 percent, 97.69 percent; for Lateral Meniscus (LMP:87 percent, 99.29 percent, 97.11 percent, Anterior Cruciate Ligament (ACL):98.72 percent, 98.94 percent, 98.84 percent; and for Posterior Cruciate Ligament (PCL): 98.72 percent, 98.94 percent, 98.84 percent. Most commonly Medial Meniscus (57 patients:32 percent) and anterior cruciate ligament (78 patients:45 percent) injury was seen involving the posterior horn of Medial Meniscus (45 patients:79 percent), and midsubstance Anterior Cruciate Ligament (53 patients:68 percent) respectively. Conclusion: MRI is a very useful non-invasive diagnostic modality having high sensitivity, specificity and accuracy in the identification of meniscal and cruciate ligament injuuries. MRI should be done in very patient of suspected ligamentous injury, to be posted for arthroscopy thus preventing unwanted arthroscopies. |
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