What is the distal expanded end of the fibula called?

• A. Lateral malleolus
• B. Medial malleolus
• C. Tibial tuberosity
• D. Calcaneus

Answer: (A)

The distal expanded end of the fibula is referred to as the lateral malleolus. This structure is located on the outer side of the ankle and serves an important role in stabilizing the ankle joint. The lateral malleolus provides a bony prominence that can be palpated at the ankle and is significant for lateral stability during ambulation and other movements.

The lateral malleolus is specifically important in the anatomy of the ankle because it forms the lateral aspect of the ankle joint, providing a point of attachment for ligaments that stabilize the joint. It articulates with the talus bone of the foot and assists in maintaining the alignment and function of the ankle.

In contrast, the medial malleolus, which is a term used in another part of the anatomy, refers to the bony prominence on the inner side of the ankle that is part of the tibia. The tibial tuberosity is an anatomical landmark located on the tibia and is the site where the patellar tendon attaches. The calcaneus is the heel bone and is the largest bone in the foot, playing a crucial role in weight-bearing and mobility. Hence, the correct identification of the lateral malleolus reflects a precise understanding of ankle anatomy and its supporting structures