Avascular necrosis of lateral femoral condyle in a middle-aged woman from central India.

Bone infarcts, also called avascular necrosis of the knee or osteonecrosis, are defined as the anoxic death of the bone parts caused by interrupted blood supply and can occur in any bone of the body. It is most associated with trauma, sickle cell disease, steroid intake, alcohol abuse, gout, and liver cirrhosis. The most affected lower limb sites are the head of the femur, medial femoral condyle and talus. We present a case of a 38-year-old female with a history of working long standing hours a day, found to have avascular necrosis of the lateral femoral condyle of the distal femur on magnetic resonance imaging of the knee, which is a rare condition.