MediAI

  Edited by ScholarGen MediAI Team A radiology-focused review of patellar cartilage injury, subchondral edema, MRI grading, differential diagnosis, treatment considerations, and AI-assisted musculoskeletal imaging. Executive Clinical Summary Anterior knee pain in a young adult does not necessarily indicate a meniscal tear, osteoarthritis, or a simple muscular problem. When pain persists around the patella—particularly with stair climbing, squatting, running, jumping, or prolonged knee flexion—the patellofemoral joint deserves careful evaluation. This case concerns a man in his early 30s with chronic left knee pain and a history of trauma. Knee MRI demonstrated irregularity of the articular cartilage along the medial facet of the patella, extensive high-signal abnormality extending through the cartilage, and associated subchondral marrow edema. The imaging pattern was interpreted as Grade 4 chondromalacia patella. A horizontal tear involving the posterior horn of the medial meniscus...