 Good morning, everyone. Myself, Dr. Nithyashree, I am doing my residency in radiology in the Department of Rated Diagnosis in PGIMS, Rohtak. Today, I am going to be presenting regarding the study of knee anatomical variables as a risk factors predisposing to anterior cruciate ligament injury using MRI morphometry. The anterior cruciate ligament is the most frequently injured ligament of the knee and some people are at greater risk of tearing their ACL than others. Various factors have been proposed to contribute to the development of an ACL tear. There are differences in bone morphology between the ACL injured and the non-injured subjects. The aim of today's presentation is to study the knee anatomical variables as a risk factors predisposing to the anterior cruciate ligament injury using MRI morphometry. Objectives are to assess the anatomical variables of tibia such as plato slopes and medial plato depth on MRI in anterior cruciate ligament injured and non-injured patients to assess anatomical variables of distal femur morphology such as medial and lateral condyle width, notch width and notch index between the anterior cruciate ligament injured and non-injured patients on MR to determine whether these variables are risk factors of ACL injury. This is a case control study of ACL injured versus non-injured patients presented to the Department of Adiodiagnosis at PGMS, Rotak. Knee MRIs of 400 patients were studied of which 200 were ACL injured and 200 were controls with normal ACL after matching for AIDS, sex and predisposing factors. Postoperative knees, inflammatory, septic, hemophiliac and degenerative arthritis were excluded. Distal femur and proximal tibia morphology was studied with respect to different parameters on multiplanar MRI. Statistical analysis was done and odds ratio were calculated. I have put up a picture of the knee MRI where you can see the notch entrance, notch width, bicondyle width and index at the level of the popliteal group. Our observations were that in different age groups there were significant bone morphology differences between ACL injured and non-injured patients. Significant difference of bicondyle width and intercondylar notch width between male and female patients were noted. Among the male group between injured and non-injured ACL patients there was significant difference in notch width index, medial posterior tibial slope and medial plateau depth were also noted. There is a narrower notch width in ACL injured men with respect to non-injured. There were no significant difference in lateral posterior tibial slopes. These were the data collected. In this table you can see the measurements of notch width index and medial and lateral tibial slopes and degrees and medial tibial slope in depth in male and female patients respectively in ACL injured and non-injured. From this study we concluded that the ACL injured have narrower notch width index and shallow medial tibial depth and steeper medial tibial slope which appear as important risk factors. Identifying these risk factors helps in stratification of intervention and non-intervention strategies of ACL injuries. These were the references. Thank you.