 Hello everyone. I'm Dr. Nikita, radiology resident from Mysore Medical College and Research Institute. I'm thankful to Indian Radiology for giving an opportunity to present my paper on role of MRI in evaluation of traumatic knee injuries among adults. Introduction. Knee injuries are very common due to sports and repetitive activities. Need to be accurately evaluate the knee injuries is very crucial for the proper management and outcome. The internal derangements of the knee is evaluated with radiography, sonography, nuclear medicine, CT, MRI, orthography and orthoscopy. In this modern era, the MRI is a primary modality of choice to investigate all the cases of knee injury since it is very accurate in detecting both intra and extracurricular injuries. MRI also provides an excellent soft tissue contrast and it is capable of evaluating the soft tissues and bone structures in multiple imaging planes which provides a significant advantages over other imaging techniques. MRI has also been demonstrated as a cost effective technique by reducing unnecessary surgical and orthoscopic interventions. The main aim and objective of my study is to evaluate the internal derangements of knee joints due to trauma using MRI and also to study the pattern of internal derangement. The methodology, the source of data, it is a descriptive study on the patient who complains of knee joint following trauma, referred to the department of radio diagnosis at Mysore Medical College and Research Institute, Mysore. The sample says it's for 45. The inclusion criteria includes adult population over 18 to 16 years, willing to undergo MRI scanning with the history of traumatic injury to the knee and consenting for the same. The exclusion criteria was patient not consenting for the same, the patient who are on the pacemakers, children below 18 years and who are degenerative orthosis of knee joint. This for the imaging protocols we used. The sequence are the axial, sagittal, coronal sections of proton fadset, T2 fadset sequence and T1 fadset sequence and also the axial T2 fadset sequence, sagittal T2 fadset, coronal T2 and sagittal T1 fadset sequence. So the MRI image must study for the evaluation of also the menisci, cruciate ligament injuries, collateral ligament injuries, articular cartilages, loose bodies, meniscial cysts, bony conditions and evidence of soft tissue injuries around the knee joint. The observations, results and discussion of my study are the interpretation of data based on the age and the sex distribution and the axial tear whether the edema is present or not, whether the tear is a partial or a complete tear. It is similar for the P cell tear also, in medial menisca lateral minstery, medial collateral and lateral ligament tear, we classify whether the tear is present or absent and whether it is present we grade it as a grade 1, grade 2, grade 3 and also the location in the type of tear is important and osteocondrol injuries were present or absent. So in 21 to 40, 21 and 40 age groups, 21 to 40 age groups comprises the maximum number of the patients in our study. So in our study out of 90 patients, 71 patients were male, so the male were more common in number compared to the females. So in our study, partial tear of ACL, which was more common than the complete tear of ACL, which constitute a 45.6% and 13.3% respectively. The partial tear was seen in 41 patients and complete tear was seen in 12 patients, rest of the patients has no tear. The study is done by Aniruddha Basu et al shows that among 25 patient in studies who had injuries of the knee joint, the 15 patients who had an ACL tear and the ACL tear was more common in the menisca injuries, so the partial tear being the common among them, so which was a similar to our study. The partial, P cell tear was uncommon, the partial tear was found in two cases and a complete tear was found in one cases of P cell tear. So in our study 13 patients had grade 1 meniscal tear, 42 patients had grade 2 meniscal tear and 17 patients had grade 3 meniscal tear, so the grade 2 meniscal tear was common which was followed by grade 3 meniscal tear. So there was a proponent of meniscal tear over the lateral meniscal tear in our study. So the lateral meniscal tear, among 25 patients who had an lateral meniscal tear, but the oblique tear was common, so which was seen in 14 patients, followed by the horizontal complex and bucket-anded tear was seen in six patients and the complex tear was seen in three patients and the bucket-anded tear was seen in two patients respectively. The cystic lesions encountered by the meniscal cyst, parameniscal cyst and popliteal cyst. The meniscal cyst and parameniscal cyst were going to be associated with the tear of the lateral meniscal in three patients and middle meniscal in two patients. The popliteal cyst, nothing but the baker's cyst was found in three patients, its location relation to the joint space and its communication with the joint cavity were clearly demonstrated on the sagittal T2 sequence. Osh's injuries, I never studied the Osh's and Osteocontal injuries were seen in 49 patients, most of them are the bony contusions, including femoral and TBL contils which were associated with the Osh's fractures. There was a subluxation of knee joint in one patient and subluxation of patella in three patients. Other findings, apart from the tear and fractures, we have a femoral toculia dysplasia, which was found in two patients. One patient is a patella alta, microdegeneration of acyl was found in two patients, exhaustrosis of lower end of the femur was found in one patient. The summary in our study, about 90 patients who were in history of trauma, referred to the department of radio diagnosis at Mysore Medical College and Research Institute. The most common age group for a phone is 21 to 40 years. So the following pattern of knee injuries were recorded are, the most common injury we found in our study was the knee cell tear, which was a partial tear is most common. The P cell tear was uncommon, it's less common. Among the mean is medial meniscal injuries, we found as a medial meniscal tear was more common than the lateral menisca. Among them, the posterior hand tear was more common in both the menisca. So the medial collateral ligament tear, so its tear outnumbered the lateral collateral ligament tears and it is a grade one tear of medial menisca were more common in MCL tears. So most common nauseous injuries were found is the bony contusions which was included the femoral and the tibial condensers. So the results of the present studies using MRA for the detection of lesions include articular cartilage lesions, meniscal injuries, cruciate ligaments were correlated well with the published studies. So this was representative images of my study. You can make out this was, we can altered signal intensity noted in the, altered signal intensity noted in the ACL. This was a complete tear of ACL associated with the joint effusion in the suprapatellar region and extending into the patellar femoral content. So the second images, this was shows altered signal intensity in the ACL also in the PCL and some amount of joint effusion also in joint effusion also in the suprapatellar communication with the patellar femoral region. It was a partial tear of ACL, PCL. This is a sagittal T2 sequence shows proton density image also shows an altered signal intensity in the quadriceps muscle. This which is a quadriceps tendon spring. In the third image, you can make out the horizontal grade 2 tears in the posterior horn of medial menisca and grade 2 tear of medial collateral ligament in the second image. So this was an horizontal tear grade 2 type of tear in the posterior horn of medial menisca and the grade 2 tear in the middle collateral ligament. This first image shows a bony contusion in the lateral femoral content with a moderate joint effusion and a complete mcl tear also. In the second image, there is an altered signal intensity in the ACL and the PCL. This was a tear, complete tear. And the third image shows a fracture of the femoral head associated with the femoral head fracture. So conclusion, MR is an excellent non-invasive radiation free imaging modality. The multi-planar capabilities and excellence of tissue delineations. It can accurately detect localized and character is various internal rearrangements of the knee joints and helps in uncovering at a correct diagnosis thereby guiding further management of the patient. G knee joint injuries are common, it will be accurately evaluate the knee injuries very crucial for the proper management and outcome. Otherwise it will lead to chronic disability to the patient. The both MRA and orthoscopy have their limitations. So the shortcoming might be overcome by combining both the modalities with clinical indication. So this was the references of my study. Thank you.