The dorsal tarsometatarsal ligaments are thinner and weaker than the plantar ligaments, failing first in Lisfranc mechanisms. The dorsal Lisfranc ligament (medial cuneiform to second metatarsal) is absent (the Lisfranc ligament is entirely plantar and interosseous), explaining why the second metatarsal lacks dorsal ligament support between the first and second cuneiforms. This structural gap is why the second TMT is the most common dislocation site.
| Origin | Dorsal surfaces of the cuneiforms and cuboid |
|---|---|
| Insertion | Dorsal bases of the metatarsals |
| Actions |
|
|---|
Reinforce the dorsal aspect of the tarsometatarsal joints.
The absence of a dorsal Lisfranc ligament at the first-second intermetatarsal space creates the vulnerability of the Lisfranc complex to dorsal dislocation. Stress radiographs with forefoot abduction and dorsiflexion open the second TMT gap in unstable Lisfranc injuries.
Dorsal TMT ligament failure producing metatarsal dorsal displacement managed with closed or open reduction and fixation.
This website uses cookies to enhance your experience. Some are essential for site functionality, while others help us analyze and improve your usage experience. Please review your options and make your choice.
If you are under 16 years old, please ensure that you have received consent from your parent or guardian for any non-essential cookies.
Your privacy is important to us. You can adjust your cookie settings at any time. For more information about how we use data, please read our privacy policy. You may change your preferences at any time by clicking on the settings button below.
Note that if you choose to disable some types of cookies, it may impact your experience of the site and the services we are able to offer.
Some required resources have been blocked, which can affect third-party services and may cause the site to not function properly.
This website uses cookies to enhance your browsing experience and ensure the site functions properly. By continuing to use this site, you acknowledge and accept our use of cookies.
