33-year-old male with many prior arthroscopies and possible tibial tubercle osteotomy. Evaluate for patellofemoral disease or meniscal tear. Metallic susceptibility artifact from orthopedic screws in the proximal tibia somewhat limited examination.MENISCI: The medial and lateral meniscus appear intact.ARTICULAR CARTILAGE AND BONE: There is focal near full-thickness to full-thickness articular cartilage defect along the medial facet of the patella with subchondral marrow signal abnormality likely degenerative in etiology. Irregularity and signal heterogeneity of the articular cartilage along the medial facet of the patella may reflect degeneration although it is uncertain if this is postoperative in etiology given the patient's history of chondroplasty. There is also a near full-thickness to full-thickness articular cartilage fissure with probable focal articular cartilage delamination along the lateral facet of the patella. There is relative sparing of the articular cartilage of the lateral and medial compartments.LIGAMENTS: The cruciate and collateral ligaments appear intact. EXTENSOR MECHANISM: The extensor mechanism appears intact.ADDITIONAL
Near full-thickness to full-thickness articular cartilage defect along the medial facet of the patella as well as full-thickness articular cartilage fissuring and focal articular cartilage delamination along the lateral facet of the patella as described above.