Location



The tuberosity of the tarsal navicular can be felt about two inches from the medial malleolus–slightly distal, and slighly plantar. Its prominence varies person to person. Medially, the navicular tuberosity is where the tendon of the posterior tibialis inserts, so you can find the navicular by having the examinee actively inverting the foot against resistance to make the tendon pop out and then follow it to its insertion.

Significance



Tenderness medially usually reflects a problem with the posterior tibialis.

Stress fractures of the navicular typically produce dorsal tenderness

Figures