Deltoid Ligament




Incidence isolated deltoid ligament injury 2.5%




Strong fan-shaped structure 

- composed of a deep and superficial layer


Superficial layer 

- inserts as one continuous structure 

- navicular anteriorly, spring ligament (calcaneonavicular), sustentaculum, and calcaneum 

- measures 10 mm wide at its origin and 2 to 3 mm thick

- length varies from 20 to 30 mm


Deep layer

- inserts onto the nonarticular medial wall of the talus 

- most of the fibers concentrated on the posterior medial aspect of the talus




Isolated deltoid injuries are extremely rare 

- need proximal fibular xrays to exclude maisonneuve injury & / or syndesmotic injury

- treated in a cast or brace