A malleolus is the bony prominence on each side of the human ankle. Each leg is supported by two bones, the tibia on the inner side (medial) of the leg. the medial malleolus is located just proximal and posterior to the navicular tuberosity. It is a bump you can feel on the inside of your ankle.
medical malleolous The medial malleolus is the prominence on the inner side of the ankle, formed by the lower end of the tibia. The lateral malleolus is the prominence on the outer side of ankle
lateral malleolous
