Skeletal Trauma > Elbow > Normal Anatomy


Normal Elbow Anatomy

The following radiographs show the normal anatomy of the elbow.
Lateral and AP views of normal elbow

  • 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.

Lateral view of elbow with anatomical lines

  • 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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