MRI of the knee is a very common and useful examination. It is the imaging test of choice in diagnosing and characterized tears of the meniscus. In addition, MRI can diagnose tears of the anterior cruciate ligament (ACL), collateral ligaments and surrounding tendons. MRI is very sensitive to diagnose fluid within the knee as well. At our facility we also perform a specialized sequence, which specifically evaluates the cartilage in the knee. Previously, cartilage was only poorly evaluated on MRI, however, with the latest technology and appropriate protocols our MRI is very accurate in evaluating the cartilage in the knee. Cartilage loss can either be related to trauma or associated with degenerative change such as arthritis. A specialized coil will be placed around the injured knee. You will lie on your back for about 25-30 minutes in the MRI machine.