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Anatomy of Olecranon

     


- Discussion:
    - together w/ proximal portion of the coronoid process, olecranon forms greater sigmoid notch of the ulna, a deep depression that serves as
           articulation w/ trochlea that serves as the articulation w/ trochlea which allows motion only in anteroposterior plane and provides
           stability to the elbow joint;
    - articular cartilage surface is interrupted by a transverse line of bone, "bare area" located midway between tip of olecranon & coronoid 
            process;
           - if this is not recongnized during reconstruction of frxed olecranon, there is temptation to eliminate any area uncovered by cartilage