Challenge of the Week / Foot & Ankle / 03.13.20

The tibial nerve runs through the tarsal tunnel at the level of the ankle. Which of the following anatomic structures is most medial?
  • Calcaneus
  • The tibia and calcaneus form the “floor” of the tarsal tunnel and are more lateral.

  • Tibia
  • The medial border of the tibia and calcaneus form the “floor” of the tarsal tunnel and are more lateral.

  • Flexor hallucis longus (FHL)
  • The FHL is the most lateral structure in the tarsal tunnel.

  • Laciniate ligament (flexor retinaculum)
  • The flexor retinaculum forms the medial border of the tarsal tunnel. Some call this the “roof” of the tarsal tunnel.

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