Deltoid ligament

A crucial ligament located in the inner ankle, providing stability and support to the joint.

The deltoid ligament is a triangular-shaped band of connective tissue situated on the medial side of the ankle joint. It is composed of several smaller ligaments that collectively function to secure the ankle, preventing excessive movement and providing a stabilizing force. The ligament complex plays an essential role in maintaining the integrity of the ankle during various activities.

Terminologia Anatomica

ligamentum deltoideum

System

Musculoskeletal system

Function

The primary function of the deltoid ligament is to provide stability to the ankle during weight-bearing activities and movements. As one of the key ligaments of the ankle, it acts to resist excessive eversion, which is the outward tilting of the foot away from the body. By connecting the ankle bone (talus) to the tibia and other surrounding bones, it ensures that the joint remains functional and stable, even during dynamic activities that involve twisting, jumping, or running. In cases of injury, such as sprains, the deltoid ligament often plays a critical role in the rehabilitation process, as restoring its strength and flexibility is essential for returning to full function.

Location

Positioned on the inner aspect of the ankle, the deltoid ligament extends from the medial malleolus of the tibia to several bones of the foot, including the talus and the navicular bone. This anatomical location not only helps support the ankle's medial stability but also plays a pivotal role in its overall biomechanics. Its strategic placement ensures that it works in concert with other ligaments and tendons surrounding the ankle, facilitating smooth movements while providing protection against potential injuries from lateral forces.

Did You Know?

The deltoid ligament is one of the strongest ligaments in the body, reflecting its crucial role in ankle stability.
Injuries to the deltoid ligament are less common than those to the lateral ligaments of the ankle, mainly because of its strength and position.
The deltoid ligament is sometimes referred to as the medial ligament of the ankle due to its location on the inside of the joint.