Background: Knee injury is the second most common problem in the musculoskeletal system for which patients consult their general physician or an orthopaedician. Since its introduction to musculoskeletal imaging in the early 1990`s and then onwards, MRI has revolutionized diagnostic imaging of the knee joints. Magnetic resonance imaging has an advantage in diagnosis of menisci, ligaments and cartilages of the knee joints along with their pathologies and injuries, particularly in the early detection of grade I and grade II lesions. The ‘knee joint’, also known as the tibio-femoral joint, is one of the largest and a complex joint of the human body, and of one of the most frequently injured joints as the bony articular surface alone is inherently unstable. Therefore, it is imperative to study internal derangements in traumatic and degenerative knees. Objectives and Aims: To evaluate the internal derangements of knee joints with MRI ". Materials and Methods: This study was carried out in the Department of Radiology, MGM Medical College & Research Institute, Puducherry and SGRR Institute of Medical & Health Sciences and SMI Hospital, Dehradun, Uttarakhand, India. Study period was from June 2022 to December 2022. 102 patients, 76 males and 26 females, aged 14-72, mean age 36.7 years, who were suspected to have meniscal, ligamentous and intra-articular pathologies and were referred by the orthopaedic department were studied using GE Signa 1.5 T MR machine. Images were obtained in sagittal, axial and coronal planes using T1, T2 and PD sequences. Slice thickness of 4mm, FOV of 19 x 19 and NEX of 4 were used.