Left humerus. Posterior view. (Trochlea visible near bottom.)
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|colspan="2"|[subject #51 ]
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|MeSH
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|Dorlands/Elsevier
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The medial portion of the articular surface of the humerus is named the trochlea, and presents a deep depression between two well-marked borders; it is convex from before backward, concave from side to side, and occupies the anterior, lower, and posterior parts of the extremity.