Which of the following ligament is not attached to talus ?
**Core Concept**
The talus bone, located in the ankle joint, is stabilized by several ligaments to maintain its position and facilitate movement. Understanding the anatomy of the ankle joint and its ligamentous attachments is crucial for diagnosing and treating ankle injuries.
**Why the Correct Answer is Right**
The talus is attached to the surrounding bones via the deltoid ligament, the medial collateral ligament, the lateral collateral ligament, and the posterior talofibular ligament. However, the calcaneofibular ligament is not directly attached to the talus. Instead, it connects the calcaneus to the fibula, providing lateral stability to the ankle joint.
**Why Each Wrong Option is Incorrect**
**Option A:** The deltoid ligament is a strong ligament that connects the medial malleolus of the tibia to the talus and calcaneus, providing medial stability to the ankle joint.
**Option B:** The posterior talofibular ligament is a crucial ligament that connects the posterior aspect of the talus to the fibula, providing posterior stability to the ankle joint.
**Option C:** The medial collateral ligament is a ligament that connects the medial malleolus of the tibia to the talus, providing medial stability to the ankle joint.
**Clinical Pearl / High-Yield Fact**
The talus is the only bone in the human body that does not have a direct connection to any muscle. This unique anatomy makes the talus susceptible to injuries and fractures, which can be challenging to treat.
**Correct Answer:** D. Calcaneofibular ligament.