Radioulnar Synostosis Workup

Updated: Jun 04, 2020
  • Author: Raymond Wurapa, MD; Chief Editor: Harris Gellman, MD  more...
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Workup

Imaging Studies

Plain radiographic imaging in orthogonal (eg, posteroanterior [PA] and lateral) planes is recommended for the workup of patients with congenital or posttraumatic radioulnar synostosis. (See the images below.)

Radioulnar synostosis occurs as either congenital Radioulnar synostosis occurs as either congenital or posttraumatic condition.
Degree of fusion in radioulnar synostosis varies a Degree of fusion in radioulnar synostosis varies and may or may not involve radial head.

In patients with congenital proximal radioulnar synostosis, the radial pronation angle, which is quickly and easily measured on the flexed PA view, may be a useful indicator of the severity of the condition. [22]