Medial malleolus

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Bone: Medial malleolus
Coronal section through right talocrural and talocalcaneal joints. (Medial malleolus labeled at center left.)
Back of left lower extremity. (Medial malleolus labeled at bottom right.)
Latin	m. medialis
Gray's	subject #61 259
Dorlands / Elsevier	m_02/12511187

The medial surface of the lower extremity of tibia is prolonged downward to form a strong pyramidal process, flattened from without inward - the medial malleolus.

• The medial surface of this process is convex and subcutaneous;

• its lateral or articular surface is smooth and slightly concave, and articulates with the talus;

• its anterior border is rough, for the attachment of the anterior fibers of the deltoid ligament of the ankle-joint;

• its posterior border presents a broad groove, the malleolar sulcus, directed obliquely downward and medialward, and occasionally double; this sulcus lodges the tendons of the Tibialis posterior and Flexor digitorum longus.

The summit of the medial malleolus is marked by a rough depression behind, for the attachment of the deltoid ligament.

See also

• Ankle
• Bimalleolar fracture
• Lateral malleolus
• Posterior malleolus
• Trimalleolar fracture

Additional images

Bones of the right leg. Anterior surface.

External links

• Diagram at wsc.edu
• Diagnostic imaging

This article was originally based on an entry from a public domain edition of Gray's Anatomy. As such, some of the information contained herein may be outdated. Please edit the article if this is the case, and feel free to remove this notice when it is no longer relevant.

v • d • e Bones of lower limbs
Femur	head of femur (fovea capitis femoris) · neck of femur · greater trochanter · trochanteric fossa · lesser trochanter · tubercle of the femur · intertrochanteric line · intertrochanteric crest · linea quadrata body (linea aspera, third trochanter, pectineal line, adductor tubercle) lower extremity (lateral condyle, medial condyle, lateral epicondyle, medial epicondyle, patellar surface)
Tibia	upper extremity medial condyle · lateral condyle · intercondyloid eminence · tuberosity of the tibia · posterior intercondyloid fossa · anterior intercondyloid fossa body soleal line lower extremity medial malleolus
Fibula	head of fibula · body of fibula · lateral malleolus
Tarsus	calcaneus (sustentaculum tali, trochlear process) · talus · navicular · cuboid · cuneiform (medial, intermediate, lateral)
Metatarsus	1st metatarsal · 2nd · 3rd · 4th · 5th
Other	patella · phalanges of the foot