An intersection syndrome may involve tendons at the ankle as they pass through the lateral compartments. The pathogenesis is the same as the tendinitis in the wrist intersection syndrome.
Risk factors:
(1) frequent runners
(2) trail runners
(3) any sport with quick lateral movements and change of direction (soccer, football, basketball)
(4) skating with poorly fitting skates
Tendons affected pass through the lateral compartment of the ankle:
(1) peroneus longus (fibularis longus)
(2) peroneus brevis (fibularis brevis)
Clinical features:
(1) lateral foot and/or ankle pain
(2) negative history for ankle trauma
(3) slight limp
(4) variable popping sensation at the ankle
(5) tenderness posterior to the lateral malleolus
(6) variable swelling
(7) pain with eversion of ankle or with resisted active dorsiflexion
MRI can be diagnostic.
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