Lower limb
Subtalar ligaments (Interosseous talocalcaneal, cervical, and peripheral ligaments)
Ligamenta talocalcanea (Anterius, posterius, mediale, interosseum & cervicale)
- Origin
- Sulcus tali within the sinus tarsi and talar neck
- Insertion
- Sulcus calcanei in the sinus tarsi and superior calcaneus
- Function
- Primary intrinsic stabilizers of the subtalar (talocalcaneal) joint; interosseous talocalcaneal and cervical ligaments govern Henke's axis of inversion-eversion
- Innervation
- Deep fibular and medial plantar nerves (L5–S1)
- Movement & chain
- Controls triplanar Henke's axis motion (inversion/supination and eversion/pronation)
- Palpation
- Palpable within the sinus tarsi depression anterior to lateral malleolus
- Clinical
- Sinus tarsi syndrome (instability and deep anterolateral hindfoot pain following severe inversion sprains); subtalar osteoarthritis.
- Segmental innervation
- L5–S1
- In clinical practice
- Sinus tarsi injection therapy, subtalar joint mobilization, and uneven surface balance training
- Region in the model
- Lower limb