Left knee pain following fall one year ago The examination is limited by patient motion artifact. Furthermore, due to the patient's body habitus, the high-resolution coil could not be used; an alternative coil was used which results in slightly suboptimal image quality. The sagittal PD sequence was not obtained secondary to extensive patient motion.MENISCI: Evaluation of the menisci is limited due to reasons provided above. Within the limits of the exam, there are no findings to suggest an unstable meniscal tear.ARTICULAR CARTILAGE AND BONE: Evaluation of the articular cartilage is limited due to the reasons provided above. Subjectively, there is mild diffuse thinning of the articular cartilage of the medial compartment although we see no fluid-filled articular cartilage defects. Mild subchondral degenerative marrow signal is also noted within the medial condyle anteriorly. There appears to also be slight lateral subluxation of the patella in relation to the femoral trochlea.LIGAMENTS: The mid to distal fibers of the anterior cruciate ligament are poorly defined, with intermediate signal intensity. Although this could reflect mucoid degeneration, it could also reflect sequela of an old tear which has undergone subsequent scarring. There are no bony contusions to suggest an acute ACL tear. There is also thickening and longitudinally-oriented increased signal within the PCL which we suspect reflects the sequela of prior injury. The lateral collateral ligament proper appears slightly thickened which may reflect prior sprain. The remaining collateral ligaments are intact.EXTENSOR MECHANISM: A small focus of increased signal is noted within the quadriceps tendon at its insertion on the patella, suggesting mild tendinosis. There is no fluid filled tear identified. The patellar tendon is intact. There is linear low signal intensity within the subcutaneous fat anterior to the patella which may reflect the sequela of chronic bursitis/scarring.ADDITIONAL
1. Abnormalities of the both the ACL and PCL thought to represent the sequela of old tears. We see no bone contusions to suggest acute ligamentous tears.2. Mild degeneration of the articular cartilage of the medial compartment.3. Small joint effusion and Baker's cyst.