The diagnosis is an avulsion fracture of the triquetrum,
represented by the small osseous element seen dorsally
in the lateral projection. This fracture is usually
evident only in the lateral projection and is easily
missed if a true lateral projection is not obtained.
This series of diagnostic quizzes that
challenge your ability to read a variety of x-ray films is
edited by Dr. Keats, alumni professor of radiology at the
University of Virginia School of Medicine in Charlottesville.
