 Good morning, one and all. I'm Dr. Shruti Subramanian. My topic of presentation is Association of Atraumatic and Sports Injury with Meniscal Tears. Medicity Institute of Medical Sciences Hyderabad. Introduction, MR imaging is a non-invasive imaging modality routinely used to assess a wide spectrum of internal knee derangements in articular disorders and has replaced conventional arthrography in evaluation of menisci and cruciate ligament injuries. The anterior and posterior cruciate ligaments are intercapsular extraseinomial ligaments of knee which help to maintain stability during rotational, accelerative and decelerative activities. Menisci play an important role in shock absorption, joint stabilisation and possibly proprioception. The mechanism behind meniscal tears is due to knee laxicity and potentially unstable knee during dynamic movements like squatting, kneeling, crawling, driving, climbing stairs, lifting items and walking. There have been many studies which have shown the association of ACL tears with meniscal injuries. However, there is relatively less studies in literature regarding the MRI appearance of ACL tears. In this study, an attempt is made to find the association of meniscal tears with atraumatic and non-contact type of sports injury aims and objectives to determine the meniscal involvement in atraumatic and non-contact sports injury. Materials and Methods. This is a single centre retrospective study where in patients referred with complaints of knee pain were evaluated and those with cruciate ligament injuries were included in the study. A total of 50 patients were evaluated and those with ACL and PCL injury were included, that is, a total number of 47 were included over a period of 18 months from 2018 Chan to 2021 March. The examination was carried out in Philips 1.5 Tesla whole body MRI scanner with dedicated decoy. The scanning was performed with slight external rotation of the leg by 10 to 15 degrees which makes it possible to visualize the entire course of ACL and societal images. Every study was reviewed for identification of meniscal tears with cruciate ligament injuries and atraumatic and non-contact type of sports injury. A statistical analysis was performed with frequency and percentage as variables. Observation. A majority of the patients in this study were males which constituted 82% as compared to females that is just 18%. Results. The most common mode of injury was road traffic accidents followed by sports injury in 13% and atraumatic causes in 17%. Percentage of ligament involvement. ACL was the most commonly involved ligament followed by combined ligament disinvolvement and the least involved was PCL. Based on history of trauma among 30 patients with no history of trauma that is atraumatic patients, lateral meniscus involvement showed slightly higher predominance that is in 50% as compared to medial meniscus in 43.3% and normal meniscus in 16%. Anterior haunt air of the lateral meniscus was more common as compared to posterior haunt air. In this graphical representation we can see that in atraumatic cases lateral meniscus was more predominantly involved as compared to medial meniscus and normal meniscus. Among 17 patients with history of non-contact sports injury lateral meniscus showed predominant involvement in 52.9% as compared to medial meniscus in 47% and normal meniscus was seen in just two patients that is in 11.7%. Anterior haunt air of medial meniscus, lateral meniscus was more common in eight patients that is in 88.8% as compared to posterior haunt. In this graphical representation we can see that in non-contact type of sports injury lateral meniscus was seen to be more predominantly involved as compared to medial meniscus and normal meniscus. These are the images which depict the association of tear of posterior haunt of medial meniscus and this image depicts the tear of anterior haunt of lateral meniscus. Discussion, the purpose of the study was to find the association of meniscal tears with atromatic and non-contact type of sports injury. A statistical analysis was done to exhibit the association of the tear with the above. Our study shows the predominant meniscal involvement in patients with atromatic and those with non-contact type of injury which revealed that anterior haunt of lateral meniscus was predominantly involved in the above meteorologies. This finding was seen to be similar to high risk of lateral meniscus tear during contact injury explained by high forces applied to the knee joint. Conclusion, patients with no history of trauma that is atromatic patients and those with sports injury non-contact type showed pre-dominant lateral meniscus involvement. These are my references. Thank you.