MediAI

  Introduction Osteochondritis dissecans (OCD) of the knee represents one of the most critical developmental and acquired osteochondral disorders affecting young athletes.  With the advent of advanced imaging modalities such as MRI, the understanding of the pathophysiological mechanisms, classification, and management strategies for OCD has expanded significantly.  This column presents a detailed case-based review—derived from a 12-year-old male patient presenting with progressive knee pain—integrating global expert-level perspectives supported by up-to-date literature and imaging correlation. Case Overview A 12-year-old boy presented with progressive right knee pain that worsened over several months following sports activity. Radiographs and MRI were performed for diagnostic clarification. [Figure 1]   Right knee anteroposterior and lateral radiographs showing a well-demarcated osteochondral lesion along the lateral aspect of the medial femoral condyle. A ...

  Subchondral Insufficiency Fracture of the Knee: A Hidden Culprit of Joint Pain in Elderly Women Introduction Knee pain in elderly individuals is often attributed to degenerative joint disease, such as osteoarthritis. However, when the pain is sudden, severe, and worsened by weight-bearing, particularly in older women without significant trauma history, a more elusive diagnosis must be considered: Subchondral Insufficiency Fracture (SIF). In this article, we present a case of SIF in a 66-year-old woman, utilizing multimodal imaging, and provide an in-depth review of its clinical implications, MRI findings, differential diagnosis, treatment options, and prognosis. Case Summary Patient: 66-year-old female Chief complaint: Acute knee pain after minor twisting injury Pain: Sharp, worsened by movement and weight-bearing Imaging: Plain radiographs and MRI Radiographic Findings Subtle sclerosis in the medial femoral condyle No clear fracture line or collapse Mild jo...