Fig. 2. The boundary of the TT expanded ±2 cm from the MC axis. The solid line (—) presented the MC axis. The dotted line (…) presented the MC axis with ±1 cm width. The dashed line (–––) presented the MC axis with ±2 cm width. C, medial process of calcaneal tubercle; M, medial malleolus; MC, malleolar-calcaneal; N, tubercle of navicular bone; TT, tarsal tunnel.
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