Role of Mri in Meniscal Tearsdr

MR imaging provides information on soft tissue damage and has been accepted widely for the evaluation of internal knee derangements. Hence the purpose of this study was to evaluate the usefulness of MRI in the early and precise diagnosis and to study the meniscal anatomy, normal variants, types and incidence of injuries in menisci by MRI. Out of 43 patients the males (84%) are commonly affected than females (16%). Majority of the patients fall under the age group of 15-30 years (48%). Among meniscal injuries medial meniscal tears (46.5%) were more common than lateral meniscus (37.2%), Grade III tears were common in both .Among medial meniscus tear, The posterior horn (55%) was commonest site of involvement and the predominant type of tear was Horizontal and oblique (35%). Among lateral meniscus tear, the anterior horn (31.3%) was commonest site of involvement and the predominant type of tear was horizontal(31.3%). Interpretation And Conclusion : This prospective study consisting of 43 patients was performed in the Department of Radio-Diagnosis on patients referred from Orthopaedic department, Bapuji Hospital Davangere. They were evaluated with detailed clinical history and clinical examinations and were subsequently subjected to imaging of knee using 1.5 Tesla Philips Achieva machine using 8-channel SENSE knee coil. The following sequences were selected as required T1W coronal, PD Fat Sat Sagittal, STIR coronal, T2W axial. Methods : Normal Shape and Attachments of the Medial MeniscusThe Menisci are crescentic laminae that deepen the articulation of the tibial surfaces that receive the femur. Their peripheral attached borders are thick and convex, their free borders thin and concave. Their peripheral zone is vascularized by capillary loops from the fibrous capsule and synovial membrane, while their inner regions are avascular They are wedge-shaped, semilunar, fibrocartilage structures composed of thick collagen fibers primarily arranged circumferentially, with radial fibers extending from the capsule, between the circumferential fibers.[8]They cover 50% of the medial and 70% of the lateral surface of the tibial Plateau[9]Each meniscus is divided into an anterior horn, a body, and a posterior horn. These criteria are, first, contact of intrameniscal signal with the superior or the inferior surface of a meniscus (or with both surfaces) and, second, distortion of the normal appearance of a meniscus [7].To diagnose a meniscal tear using these criteria, it is essential to understand how normal variations in the shape of the menisci and their attachments compare with the MR appearance of a meniscal tear Mr Criteria For Diagnosing Meniscal Tears: To study the spectrum of MRI findings meniscal tears in traumatic knee. To correlate imaging findings with clinical examination findings.To identify the commonest derangement in meniscal tears