Table of Contents
Overview
Parts and landmarks of the talus The talus consists of three parts – a head, neck and body. The head of the talus is the most distal part and presents the navicular articular surface. Proximal to the head is the neck of the talus. The inferior surface of the neck of talus contains a deep trough known as the talar sulcus which encloses a small cavity called the tarsal sinus. The most proximal part of the talus is the body. It is defined superiorly by a trochlear surface which articulates with the distal end of the tibia. On the medial and lateral sides of the body, the talus bears a medial and lateral malleolar surface that serve as articular surfaces for the medial and lateral malleoli, respectively. On the posterior aspect of the body, we see the posterior process bearing the medial and lateral tubercles which are separated by the groove for the tendon of flexor hallucis longus muscle.
Keypoints
| Parts | Head, neck and body of talus |
| Bony landmarks and articular surfaces |
Head of talus: Navicular articular surface Neck of talus: Talar sulcus, tarsal sinus Body of talus: Trochlea of talus, posterior process of talus, medial tubercle, lateral tubercle, groove for tendon of flexor hallucis longus muscle of talus, medial malleolar surface, lateral malleolar surface |
| Articulations |
Ankle/talocrural joint: Talus, tibia, fibula Subtalar joint: Talus, calcaneus Talonavicular joint: Talus, navicular bone |
| Talar articular surfaces |
Ankle joint: Lateral malleolar surface of talus, medial malleolar surface of talus Subtalar joint: Anterior, middle and posterior facets for calcaneus Talonavicuar joint: Navicular articular surface |
| Ligamentous attachments | Lateral collateral ligament (posterior talofibular ligament, anterior talofibular ligament), medial collateral (deltoid) ligament (anterior tibiotalar ligament, posterior tibiotalar ligament), medial talocalcaneal ligament |
Atlas of Talus
Body of talus (Corpus ossis tali)
superior view
Neck of talus (Collum ossis tali)
superior view
Head of talus (Caput ossis tali)
superior view
Trochlea of talus (Trochlea ossis tali)
medial view
Posterior process of talus (Processus posterior ossis tali)
superior view
Medial tubercle of posterior process of talus (Tuberculum mediale processus posterioris ossis tali)
superior view
Lateral tubercle of posterior process of talus (Tuberculum laterale processus posterioris ossis tali)
superior view
Talar sulcus (Sulcus ossis tali)
inferior view
Tarsal sinus (Sinus tarsi calcanei)
inferior view
Groove for tendon of flexor hallucis longus muscle of talus (Sulcus tendinis musculi flexoris hallucis longi ossis tali)
superior view
Superior facet of talus (Facies superior ossis tali)
superior view
Lateral malleolar facet of talus (Facies malleolaris lateralis ossis tali)
superior view
Medial malleolar facet of talus (Facies malleolaris medialis ossis tali)
superior view
Anterior facet for calcaneus of talus (Facies articularis calcanea anterior ossis tali)
inferior view
Middle facet for calcaneus of talus (Facies articularis calcanea media ossis tali)
inferior view
Posterior calcaneal articular facet of talus (Facies articularis calcanea posterior ossis tali)
inferior view
Navicular articular surface of talus (Facies articularis navicularis ossis tali)
superior view
Reference
- https://kenhub.com
