Background: Traumatic knee injuries are common and can lead to significant morbidity if not accurately diagnosed and managed. Magnetic Resonance Imaging (MRI) has emerged as a valuable tool for evaluating internal derangements of the knee joint and in the study of anterior cruciate ligament (ACL) and posterior cruciate ligament (PCL) tears. This study aims to evaluate the role MRI and assess its diagnostic accuracy in evaluation of ACL and PCL tears. Methods: A descriptive cross-sectional study was conducted on 30 patients with traumatic knee injuries. MRI was performed and the imaging patterns, nature, and mechanism of injuries were analysed. The diagnostic accuracy of MRI in evaluating the ACL and PCL injuries was evaluated using sensitivity, specificity, positive predictive value (PPV), and negative predictive value (NPV). Results: The mean age of the patients was 32.8 ± 10.6 years, with a male predominance (73.3%). ACL complete tear (26.7%, p = 0.02) and lateral meniscal tear (33.3%, p = 0.005) were the most common injuries. Joint effusion (63.3%, p < 0.001), bone contusions (36.7%, p = 0.02), and ancillary findings (56.7%, p < 0.001) were frequently observed. MRI demonstrated high diagnostic accuracy, with sensitivity ranging from 80.0% to 100%, specificity from 95.0% to 96.3%, PPV from 75.0% to 91.7%, and NPV from 95.5% to 100%. Conclusion: MRI is a highly accurate imaging modality for evaluating ACL and PCL tears of the knee joint. The high prevalence of ligament injuries, along with associated findings, underscores the importance of MRI in the diagnosis and grading of these injuries. Accurate diagnosis using MRI can guide appropriate management and improve patient outcomes.