What does the deltoid ligament help prevent?

The deltoid ligament, located on the medial side of the ankle, plays a crucial role in maintaining the stability of the ankle joint. It is a strong, triangular ligament that connects the tibia to various tarsal bones. Its primary function is to help prevent excessive eversion, which is when the foot rolls outward. This is important because excessive eversion can lead to ankle sprains and instability.

When the foot undergoes eversion beyond its normal range, the deltoid ligament is challenged, and without its support, the integrity of the ankle may be compromised. Therefore, its primary role in preventing the outward turning of the heel is essential for maintaining ankle health and function during activities that involve lateral movements or changes in direction.