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Treatment of adolescent tibia vara by asymmetrical physeal distraction.

We have treated 12 adolescent patients with idiopathic tibia vara by asymmetrical physeal distraction using a modified Wagner external fixator. There were no major complications and a mean correction of 13 degrees was achieved. The main advantages of the technique are that no osteotomy, internal fixation or bone graft is needed, and that the operation can be performed on both tibiae simultaneously. No shortening is produced and lengthening can be added to angular correction if required.