Subtalar and Transverse Tarsal Joints
Anatomy of the Subtalar Joint
The subtalar joint plays a vital role in foot movement, enabling inversion and eversion while being stabilized by various ligaments.
Subtalar and Transverse Tarsal Joints: Anatomy of the Subtalar Joint
The subtalar joint, also known as the talocalcaneal joint, is a crucial component in foot biomechanics, allowing inversion and eversion movements. It connects the talus and calcaneus bones, contributing to stability and movement adaptability.
Anatomy of the Subtalar Joint
Bone Structure
The subtalar joint is formed by the inferior surface of the talus articulating with the superior surface of the calcaneus.
Ligaments Supporting the Joint
- Interosseous talocalcaneal ligament - located within the sinus tarsi, it stabilizes the joint.
- Cervical ligament - provides additional reinforcement.
- Lateral and medial talocalcaneal ligaments - contribute to limiting excessive movement.
Joint Function and Movements
The subtalar joint facilitates movements such as inversion (tilting the foot inward) and eversion (tilting outward), which are essential for walking on uneven surfaces.
Clinical Significance
Injuries or dysfunction in the subtalar joint can lead to impaired movement and conditions such as subtalar arthritis or instability, often requiring medical intervention.
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