Purpose: The study is for the evaluation of low tesla(0.064T) MR imaging diagnostic accuracy in the internalderangement of the knee. Materials and Methods: We retrospectively analysed the MR images of 36 njured knees of 35patients. The presence of tear was determined by arthroscopy or surgery in all cases. Results: The sensitivity,specificity, accuracy, positive predictive value, negative predictive value of low tesla MRI for the diagnosis ofanterior cruciate ligament injury were 83%, 88%, 86%, 77%, 91%, for the posterior cruciate ligament 75%, 95%, 86%,92%, 83%, for the medial collateral ligament 83%, 96%, 92%, 91%, 92%, for the lateral collateral ligament 67%,97%, 94%, 67%, 97%, for the menisci 75%, 93%, 89%, 75%, 93%. Conclusion: The low tesla MRI is an accurate methodin detection and evaluation of the internal derangement of the knee.