What is talar process?
The lateral process of the talus is a wedge-shaped prominence of the talar body. The top of the lateral process articulates with the fibula and forms part of the lateral gutter of the ankle joint. The bottom of the lateral process forms the anterior portion of the posterior subtalar joint.
What is anterior talus?
The talus bone of the ankle joint connects the leg to the foot. The head of talus looks forward and medialward; its anterior articular or navicular surface is large, oval, and convex. Its inferior surface has two facets, which are best seen in the fresh condition.
What is a talar process fracture?
A talus fracture is a break in one of the bones that forms the ankle. This type of fracture often occurs during a high-energy event, such as a car collision or a fall from a significant height. Because the talus is important for ankle movement, a fracture often results in substantial loss of motion and function.
What is the lateral talar process?
The lateral process of the talus has a large base that articulates with the fibula dorsolaterally and contributes to maintaining the ankle mortise. It forms the lateral portion of the subtalar joint articulating with the posterior facet of the calcaneum inferomedially.
What is the anterior process of the calcaneus?
The anterior process off the calcaneus is located at the anterior (front) portion of the heel bone. X-ray and ultrasound examination can show an anterior process of the calcaneum fracture. Ultrasound examination at The Foot and Ankle Centre can assist in diagnosing this problem.
Is talus and talar the same?
The talus is composed of a body, neck and head, and posterior and lateral processes. The talar body is wedge-shaped, wider anteriorly than posteriorly and largely covered by articular cartilage.
What is talar bone?
Overview. The talus is a small bone that sits between the heel bone (calcaneus) and the two bones of the lower leg (the tibia and fibula). It has an irregular, humped shape like a turtle’s shell. The bones of the lower leg ride on top and around the sides to form the ankle joint.
Why is it called a Shepherd’s fracture?
A Shepherd fracture refers to a fracture of the lateral tubercle of the posterior process. An elongated lateral tubercle of the posterior process of the talus is referred to as a Stieda process, so occasionally these fractures are described as Stieda process fractures.
What is bifurcate ligament?
The bifurcate ligament (BL) of the foot, also called Chopart ligament, is a strong Y-shaped structure that stabilizes the calcaneocuboid joint [1]. The BL also stabilizes the talocalcaneonavicular and midtarsal joints, and therefore, has been described as the keystone of the transverse tarsal joint [2].
What is the os Calcis?
1. The largest of the tarsal bones; it forms the heel and articulates with the cuboid anteriorly and the talus superiorly. Synonym(s): calcaneal bone, calcaneum, heel bone, os calcis. 2.
What are lateral Talar process fractures?
Lateral talar process fractures or snowboarder fractures are talus fractures that can mimic a lateral ankle sprain. It may be an isolated fracture or occur as a component of more complex ankle fractures. Article:
What is the presentation of Talar avulsion fractures?
Talar avulsion fractures may occur at multiple locations. Ankle pain is often the presenting complaint and the lesion is best seen on an AP view of the ankle and appears as a small avulsion lateral to the talus.
What is the posterior process of the talus?
Fractures of the posterior process of the talus The posterior process of the talus comprises medial and lateral tubercles, bearing the groove for the flexor hallucis longus tendon. The lateral tubercle, known as Stieda’s process, projects more posteriorly than medially.
What is the rate of incidence of talar fractures?
Fractures of the talus are uncommon and they comprise 3.4% of foot and ankle fractures and 0.32% of all fractures in the human body. Fractures of the lateral and posterior processes are considered to be peripheral talar fractures.