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Computed tomography classification of Hoffa fracture. The anatomical femoral axis (the right dotted line) and the line parallel to the posterior cortex of the femoral condyle (the left dotted line) divided the femoral condyle into three regions (a region locates anterior to the right dotted line; b region locates between both dotted lines and c region locates posterior the left dotted line). The solid line represents fracture line.
