The JBJS Quiz of the Month is a collection of 10 relevant questions from each orthopaedic subspecialty. The questions are drawn from JBJS Clinical Classroom, which houses over 4,500 questions and 3,100 learning resources. Take the Quiz to see how you score against your peers!

NOTE: This quiz does not earn users CME credits. The questions must be answered within Clinical Classroom to earn CME credits.

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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