The dorsal talonavicular ligament is a broad, thin band over the dorsal talonavicular joint, connecting the dorsal talar neck to the dorsal navicular. It is much weaker than the plantar calcaneonavicular (spring) ligament below the joint, and the extensor tendons and dorsalis pedis vessels cross superficial to it. Its injury is identified on MRI as signal change between the dorsal talar neck and navicular.
| Origin | Dorsal aspect of the talar neck |
|---|---|
| Insertion | Dorsal surface of the navicular |
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Reinforces the dorsal aspect of the talonavicular joint and limits plantarflexion of the navicular on the talus.
The dorsal talonavicular ligament is torn in midfoot (Chopart) sprains from forced plantarflexion and inversion, producing dorsal midfoot pain and swelling, sometimes with a small dorsal avulsion flake from the talus or navicular. MRI confirms the tear and any associated navicular bone bruising. The talonavicular joint is the most mobile joint of the hindfoot-midfoot complex, and its fusion eliminates most hindfoot motion; the ligament is divided when the joint is prepared for arthrodesis.
Joint degeneration producing midfoot pain managed with taping and orthotics before talonavicular arthrodesis for end-stage disease.
Forced plantarflexion and inversion injury tearing the ligament at the Chopart joint, causing dorsal midfoot pain and sometimes a dorsal avulsion fragment.
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