Lateral malleolus
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| Bone: Lateral malleolus | |
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| Lateral aspect of right leg. (Lateral malleolus labeled at lower left.) | |
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| Coronal section through right talocrural and talocalcaneal joints. (Lateral malleolus labeled at center right.) | |
| Latin | malleolus lateralis |
| Gray's | subject #62 260 |
| Dorlands / Elsevier | m_02/12511177 |
The lower extremity (distal extremity; external malleolus) of the fibula is of a pyramidal form, and somewhat flattened from side to side; it descends to a lower level than the medial malleolus.
The lateral surface is convex, subcutaneous, and continuous with the triangular, subcutaneous surface on the lateral side of the body.
The medial surface presents in front a smooth triangular surface, convex from above downward, which articulates with a corresponding surface on the lateral side of the talus. Behind and beneath the articular surface is a rough depression, which gives attachment to the posterior talofibular ligament.
The anterior border is thick and rough, and marked below by a depression for the attachment of the anterior talofibular ligament.
The posterior border is broad and presents the shallow malleolar sulcus, for the passage of the tendons of the Peronæi longus and brevis.
The summit is rounded, and gives attachment to the calcaneofibular ligament.
Often when a patient fractures their ankle, this is the bone that suffers a chip or other significant damage.
Additional images
 Bones of the right leg. Anterior surface. |
 Back of left lower extremity. |
See also
External links
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 As such, some of the information contained herein may be outdated.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.
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Some of the initial content on this page may be incorporated in part from copyleft sources in the public domain including wikis such as Wikipedia and AskDrWiki. Drug information for patients came from the The National Library of Medicine. Infectious disease information may have come from the Centers for Disease Control (CDC). Differential Diagnoses are drawn from clinicians as well as an amalgamation of 3 sources: 1.The Disease Database; 2. Kahan, Scott, Smith, Ellen G. In A Page: Signs and Symptoms. Malden, Massachusetts: Blackwell Publishing, 2004:3; 3. Sailer, Christian, Wasner, Susanne. Differential Diagnosis Pocket. Hermosa Beach, CA: Borm Bruckmeir Publishing LLC, 2002:7 .
