Male, 47 years old. Left knee pain. 10 mos s/p microfracture medial femoral condyle. MENISCI: The posterior horn of the medial meniscus is torn and fragmented which may in part be postsurgical. There is additional horizontal tearing through the body of the medial meniscus. The anterior horn of the medial meniscus is intact. The lateral meniscus is intact.ARTICULAR CARTILAGE AND BONE: There is moderate to severe cartilage loss diffusely involving the medial femoral condyle with a full-thickness cartilage defect measuring up to 2.5 x 1.8 cm. Moderate underlying bone marrow signal abnormality may reflect a combination of reactive changes and microfracture procedure. Lateral compartment and patellofemoral cartilage is intact. There is an additional small focus of bone marrow edema at the base of the tibial spines.LIGAMENTS: Expansion and increased signal within the ACL is compatible with mucoid degeneration. The PCL and collateral ligaments are intact. EXTENSOR MECHANISM: No significant abnormality noted.ADDITIONAL
1.Severe cartilage loss involving the medial femoral condyle including a large full-thickness defect as above. Underlying marrow signal abnormality may reflect a combination of reactive changes and microfracture procedure.2.Tearing and fragmentation of the posterior horn and body of the medial meniscus.3.Mucoid degeneration of the ACL.