Reason: severe pain r/o foreign body History: as above with crepitance and locking Secondary to patient body habitus high definition coil could not be used. Alternative coil was used, which results in slightly suboptimal images.MENISCI: Complex tearing/fragmentation of the body and posterior horn of the lateral meniscus with both vertical and horizontal tear components. Lateral extrusion of the body of the lateral meniscus. Horizontal tearing of the anterior horn of the lateral meniscus with extension into the tibial articular surface. Near fluid signal intensity adjacent to the anterior horn of the lateral meniscus may represent parameniscal cyst. Medial meniscus is slightly attenuated but is intact.ARTICULAR CARTILAGE AND BONE: Full-thickness degeneration of the lateral tibial plateau articular cartilage, particularly beneath the posterior horn of the lateral meniscus with underlying subchondral cyst. Full-thickness degeneration along the posterior aspect of the lateral femoral condyle. Full-thickness focal cartilage defect along the femoral trochlea centrally. Subjective mild degeneration of the articular cartilage of the medial and patellofemoral compartment. Tricompartmental osteophytes, most prominent in the lateral compartment.LIGAMENTS: ACL and PCL are unremarkable. Medial collateral ligament appears thickened with ossification along the medial femoral epicondyle, likely reflecting old injury to the ligament. Lateral collateral ligament is unremarkable.EXTENSOR MECHANISM: Patellar and quadriceps tendons are intact.ADDITIONAL
1.Extensive complex tearing/fragmentation of the lateral meniscus.2.Osteoarthritis most severe at the lateral compartment.3.Small joint effusion.4.Findings indicative of old injury to medial collateral ligament.5.No foreign body is evident. If strong clinical suspicion of superficial foreign body, targeted ultrasound can be consider for further evaluation.