Malleolar sulcus

Malleolar Sulcus is a term used in anatomy to describe a specific groove located on the inferior surface of the tibia, one of the two bones in the lower leg. This groove is also known as the tibial malleolar sulcus and is a significant anatomical feature in the human body.

Anatomy[edit | edit source]

The malleolar sulcus is found on the medial side of the lower end of the tibia. It is a shallow, broad groove that runs vertically down the bone. This groove is where the tendons of the tibialis posterior muscle and flexor digitorum longus pass.

The malleolar sulcus is bordered by the medial malleolus, a bony prominence that can be felt on the inner side of the ankle. The medial malleolus and the malleolar sulcus together form a canal-like structure, which is covered by the flexor retinaculum, a band of connective tissue. This canal is known as the tarsal tunnel.

Clinical Significance[edit | edit source]

The malleolar sulcus is clinically significant as it is a landmark used in surgeries involving the ankle and foot. It is also involved in a condition known as tarsal tunnel syndrome, which is a type of neuropathy that occurs when the tibial nerve is compressed as it travels through the tarsal tunnel.