Abstract

In this study, we wanted to conduct a radiological evaluation of internal derangement of knee joint due to trauma using Magnetic Resonance Imaging (MRI), and study the pattern of internal derangement. Methods: This was a hospital based descriptive study conducted among 90 patients who presented with knee joint pain following trauma to the Department of Radiodiagnosis, Mysore Medical College and Research Institute, Mysore, from November 2017 to April 2019 after obtaining clearance from Institutional Ethics Committee and written informed consent from the study participants. Results: The most common age group involved was between 21 to 40 years. The most common injury was Anterior Cruciate Ligament (ACL) tear, of which, partial tears were common. PCL tears were less common. Among the meniscal injuries, medial meniscal tears were more common than the lateral meniscus tears. Posterior horn tear was more common in both menisci. Medial collateral ligament tears outnumbered lateral collateral ligament tears and grade 1 tears were more common in MCL. Most of the osseous injuries were bony contusions involving femoral and tibial condyle. Conclusion: Knee joint injuries are common. The need to accurately evaluate the knee injuries is very crucial for the proper management and outcome; otherwise, it will lead to chronic debility to the patient. Both MRI and arthroscopy have their limitations. MRI should be the initial investigation of choice in the evaluation of all cases of knee joint injuries as it can detect both intra- and extra-articular pathologies and also osseous structures. MRI acts as a road map for arthroscopy.

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