Tibia

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Medial Malleolus

The medial malleolus is the medial surface of the Distal portion of the Tibia. It is prolonged downward to form a strong pyramidal process and flattened from without, inward.

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 medially, 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.

Sources

• Medial malleolus. (2008, September 22). In Wikipedia, The Free Encyclopedia. Retrieved 21:12, September 26, 2008, from http://en.wikipedia.org/w/index.php?title=Medial_malleolus&oldid=240146811
• Osteology - the tibia. Grays anatomy (public domain version), downloaded on 26 September, 2008, from http://www.bartleby.com/107/61.html