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According to Ficat classification, how severe the necrosis is in this case?
According to Ficat staging this will come in stage II, because there is mixed osteopenia and sclerotic changes seen in the head without any obvious crescent sign, in particular radiographic view.
There is bilateral joint space reduction, articular margins are irregular with subchondral patchy sclerosis and osteopenia imaging features are suggestive of bilateral stage II avascular necrosis of femoral head.