The following radiographs show the normal anatomy of the elbow.
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Lateral and AP views of normal elbow
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- A complete exam includes AP, lateral and 2 oblique views.
- The olecranon process of the ulna articulates with the trochlea and olecranon
fossa of the humerus.
- The radial head articulates with the capitulum. These two structures should align
in all projections.
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Lateral view of elbow with anatomical lines
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- Anterior humeral line: a line drawn parallel to the anterior humerus should
pass through the middle third of the capitulum.
- Proximal radial line: a line along the longitudinal axis of the radius should
pass through the center of the capitulum in all projections.
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