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Safe zones for pin insertion

Proximal part of the proximal tibia

The peroneal nerve runs posteriorly at the level of the fibular head and curves anteriorly as it goes caudal.

Transfixation

The medial and the lateral zones at the level of and ventral to the fibular head are the only safe zones for tibial transfixation.

Unilateral fixation

The anterior zone on both sides of the patellar ligament is safe for unilateral fixation.