Reason: meniscus tear vs. AVN History: right knee pain and swelling. MENISCI: There is a horizontal tear through the anterior body and anterior horn of the lateral meniscus with a parameniscal cyst adjacent to the anterior horn measuring 2 mm. The posterior horn of the lateral meniscus is intact.The medial meniscus is intact.ARTICULAR CARTILAGE AND BONE: The articular cartilage of the patellofemoral and tibiofemoral compartments are intact.Serpiginous abnormal signal within the posterior aspect of the distal femoral diaphysis compatible with bone infarct.LIGAMENTS: The cruciate and collateral ligaments are intact. EXTENSOR MECHANISM: The extensor mechanism is intact.ADDITIONAL
1.Horizontal tear of the anterior body and anterior horn of the lateral meniscus with parameniscal cyst adjacent to the anterior horn of the lateral meniscus.2.Bone infarct in the distal femur.3.Moderate joint effusion.