Could you please tell me what this all means:FINDINGS: Postsurgical changes are visualized from prior anterior cruciate ligament reconstruction with susceptibility artifact arising from the tibial and femoral interference screws.The anterior cruciate ligament graft and posterior cruciate ligaments is intact.The medial meniscus is diminutive and truncated throughout likely of related to prior injury or debridement. There are no displaced fragments. The lateral meniscus is truncated along its free edge in the body with increased signal in the posterior horn which surfaces along the lateral, inferior, and superior margins.The medial and lateral collateral ligaments are intact. The quadriceps tendon is normal in signal. Susceptibility artifact in the proximal and distal patellar tendon are likely related to anterior cruciate ligament graft harvest. The osseous structures demonstrate normal alignment. There is degenerative spurring along the medial and lateral joint lines. There is a 1.5 cm area of full-thickness cartilage loss in the medial femoral condyle with subchondral cystic changes in the femur. There is cartilage spurring in the lateral knee compartment as well as the patellofemoral compartment without focal cartilage defect. There is a small suprapatellar joint effusion.The visualized hamstring and calf muscles and tendons about the knee demonstrate normal signal. There are no soft tissue masses. IMPRESSION: 1. Postsurgical changes from prior anterior cruciate ligament reconstruction. The graft is intact. 2. Suspected chronic tear of the medial meniscus and/or postsurgical changes as discussed above. 3. Nondisplaced tear along the free edge and posterior horn of the lateral meniscus. 4. Cartilage loss in the lateral femoral condyle with associated subchondral cystic changes and edema. 5. Joint effusion.