Malleolar sulcus

Malleolar Sulcus

Diagram of the tibia and fibula, showing the location of the malleolar sulcus.

The malleolar sulcus is a groove located on the posterior aspect of the tibia, specifically on the medial malleolus. It serves as a passageway for tendons and is an important anatomical feature in the lower limb.

Anatomy

The malleolar sulcus is found on the distal end of the tibia, which is one of the two bones of the lower leg, the other being the fibula. The sulcus is situated on the medial side of the tibia, just behind the medial malleolus, which is the bony prominence on the inner side of the ankle.

Structure

The sulcus is a shallow groove that allows for the smooth passage of tendons from the muscles of the leg to the foot. It is primarily involved in the movement and stabilization of the foot and ankle.

Function

The primary function of the malleolar sulcus is to provide a pathway for the tendons of the tibialis posterior and flexor digitorum longus muscles. These tendons pass through the sulcus as they travel from the leg to the foot, allowing for flexion and inversion of the foot.

Clinical Significance

Injuries or conditions affecting the malleolar sulcus can lead to issues with tendon movement and ankle stability. Conditions such as tendinitis or tenosynovitis can occur in the tendons that pass through this groove, leading to pain and dysfunction.

Related Pages

• Tibia
• Fibula
• Medial malleolus
• Tibialis posterior
• Flexor digitorum longus