Sonographic Evaluation of Pathologies of Knee Joint with MRI Correlation
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Date
2020-03
Journal Title
Journal ISSN
Volume Title
Publisher
Ibn Sina Academy of Medieval Medicine & Sciences
Abstract
Introduction: Musculoskeletal imaging has rapidly expandedin last few years and ultrasound has become popular modalityfor evaluation of various joints. Magnetic resonance imaging isaccepted as the gold standard technique for evaluation ofvarious knee pathologies. However, ultrasound beinginexpensive, widely available and non-invasive techniquewhich also allows dynamic imaging can be used forassessment of knee joint as an alternative to MRI.Aim: To evaluate role of ultrasound for assessing various kneepathologies and to assess the accuracy of ultrasound incomparison to MRI.Materials and Methods: This prospective study included 100patients whose symptoms were suggestive of knee diseaseand were undergoing both ultrasound and MRI. Ultrasoundexamination of the involved knee was done together with anultrasound examination of the contralateral normal knee forcomparison followed by MRI of the symptomatic knee in all 100patients. MRI was regarded as gold standard. Comparison wasmade between ultrasound and MRI using KAPPA coefficient.Sensitivity, specificity, PPV, NPV and accuracy were calculatedto assess diagnostic accuracy of ultrasound as compared toMRI and ultrasound.Results: Most common ultrasound finding in present studywas knee effusion followed by osteophytes. Almost perfectagreement was noted between ultrasound and MRI fordetecting medial meniscus tear, meniscal cyst, medialmeniscal extrusion, MCL tear, Bakers cyst and osteophytes.Only slight agreement was noted between ultrasound and MRIfor detecting lateral meniscal degeneration and ACL tear.Among various pathologies ultrasound showed accuracy of100 for detecting baker’s cyst and accuracy of 99 for detectingMCL tear and patellar tendinopathy.Conclusion: Ultrasound is a good imaging modality for extraarticular lesions such as patellar tendinopathy, medial andlateral collateral ligaments. Ultrasound can also be an effectiveimaging modality for evaluating patients with medial meniscaltears, baker’s cyst and knee effusion. For detection of meniscaldegeneration ultrasound performs poorly as compared to MRI.Both anterior and posterior cruciate ligaments are not clearlyvisualized on ultrasound, thus it is poor modality for evaluatingboth.
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Keywords
Cruciate Ligament, Collateral Ligament, Meniscus, Osteoarthritis
Citation
Sharma Veerendra K, Grewal Trishdeep Singh. Sonographic Evaluation of Pathologies of Knee Joint with MRI Correlation. International Journal of Medical Research Professionals. 2020 Mar; 6(2): 26-33