16-year-old female with right knee swelling. Evaluate healing of lateral femoral condyle microfracture at 6 months postop. Some sequences are limited by patient motion artifact.MENISCI: There is increased signal abnormality within the posterior horn and body of the lateral meniscus which extends to the tibial and femoral articular surface and presumably represents prior tearing or postsurgical changes of prior partial meniscectomy. No fluid-filled tear is identified to confirm a re-tear of the meniscus. The anterior horn appears intact. The medial meniscus appears intact.ARTICULAR CARTILAGE AND BONE: There is heterogeneity of the articular cartilage along the weightbearing portion of the lateral femoral condyle above the posterior horn of the meniscus presumably representing postsurgical changes from prior microfracture. No full-thickness articular cartilage defect is identified in this area. The articular cartilage of the medial tibiofemoral compartment is relatively spared. There is focal near full-thickness articular cartilage degeneration along the lateral facet of the patella with underlying degenerative subchondral signal abnormality.LIGAMENTS: The cruciate and collateral ligaments appear intact. EXTENSOR MECHANISM: The extensor mechanism appears intact. Note is made of patella alta. The Insall Salvati ratio measures 1.6.ADDITIONAL
1. Postsurgical changes prior partial lateral meniscectomy and lateral femoral condyle microfracture/chondroplasty as described above. No fluid-filled defects are identified within the lateral meniscus to confirm re-tear.2. Patella alta which can be seen in patients with patellofemoral instability.3. Probable loose body within the joint space as described above.