Left knee locking MENISCI: There is globular signal abnormality within the posterior horn of the medial meniscus suggesting intrasubstance degeneration although there is no discrete signal abnormality extending to either articular surface to suggest focal tear. The lateral meniscus also appears intact.ARTICULAR CARTILAGE AND BONE: There is heterogeneity and thinning of the articular cartilage of the medial compartment, particularly of the femoral condyle anteriorly. There is no discrete full-thickness defect. Similar changes are noted in the lateral compartment although to a lesser degree. There is severe articular cartilage loss of the patellofemoral compartment particularly of the lateral patellar facet. There is associated underlying degenerative marrow signal abnormality and these changes have progressed from the prior exam.LIGAMENTS: No significant abnormality noted. EXTENSOR MECHANISM: No significant abnormality noted.ADDITIONAL
1.Mild intrasubstance degeneration of the posterior horn of the medial meniscus with no evidence of discrete medial or lateral meniscal tear.2.Worsening articular cartilage loss of the patellofemoral compartment.3.Small foci of low T1/T2 signal are identified in the posterior joint space which may represent small calcified bodies however these are similar in size and location to the prior exam and may be fixed in nature.