Corpus: Interosseous talocalcaneal ligament
1. Definition
The interosseous talocalcaneal ligament is a short, thick ligament that is part of the ligamentous apparatus of the talotarsal joint.
2. Anatomy
The interosseous talocalcaneal ligament is the primary connecting ligament between the talus and the calcaneus. Located in the sinus tarsi, it is approximately 2.5 cm wide in its mediolateral extension and is very coarse. It separates the two chambers of the lower ankle joint. The interosseous talocalcaneal ligament is formed by the union of the joint capsules of the two parts of the ankle joint:
- The talocalcaneonavicular joint
- The talocalcaneal joint
Cranially, it attaches to the underside of the talus, in the sinus tarsi, a groove between the two facets of the joint surface located there. Caudally, its fibers extend into the corresponding depression on the upper side of the calcaneus, the calcaneal sulcus.
3. Function
The interosseous talocalcaneal ligament stabilizes the lower ankle joint, working together with the opposing cervical ligament.[1]
4. Source
- ↑ Pretterklieber, M: Anatomie und Kinematik der Sprunggelenke des Menschen, Der Radiologe, Springer-Verlag, 1999