- Etiology: bleeding into joint -> synovial proliferation + dissolving of articular cartilage -> joint space narrowing + sclerosis
- Imaging: affects knee / elbow / ankle
— Initially see distension of joint capsule with dense joint effusion, periarticular osteoporosis, widened intercondylar notch due to condyle overgrowth, squaring of patella
— Eventually see joint space narrowing, subchondral cyst, osteophyte, epiphyseal overgrowth + premature closure of growth plate - MRI: blooming synovial nodules (blood products)
- DDX: juvenile idiopathic arthritis, sickle cell disease, septic joint
Radiology Cases of Hemophilia
