What is the term for the inner protrusion on the side of the ankle?

The inner protrusion on the side of the ankle is referred to as the medial malleolus. This structure is formed by the lower end of the tibia and is located on the inner aspect of the ankle. It plays a crucial role in the anatomy of the ankle by contributing to its stability and forming the medial aspect of the ankle joint.

The medial malleolus not only serves as an attachment point for ligaments that help support the ankle joint but also has a significant role in the mechanics of foot movement. Understanding its location is important in the context of injuries or conditions that affect the ankle, such as fractures or sprains.

The lateral malleolus, which is another notable feature of the ankle, is found on the outer side and is associated with the fibula. The tibia and fibula are the two long bones of the lower leg, with the tibia being the larger and supporting most of the body's weight. However, the question specifically asks for the inner protrusion, making the medial malleolus the correct term.