UW Radiology

AJR article on a project funded by the Rohrmann Endowment

The Relevance of Ulnar-Sided Contrast Extravasation During Radiocarpal Joint Wrist Arthrography. Michael J. Lee, Michael L. Richardson, Hyojeong Mulcahy, Felix S. Chew, and Jack Porrino.

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Musculoskeletal Imaging

Original Research

Magnetic resonance imaging (MRI) of the wrist combined with radiocarpal joint injections of contrast has been instrumental in diagnosing injuries to the triangulofibrocartilage complex (TFCC). These radiologic exams have decreased the need for invasive and costly wrist arthrograms. As the frequency and quality of imaging increases, our understanding of wrist anatomy continues to evolve. For example, we observe contrast extravasating proximal and medial to the ulnar styloid during radiocarpal joint injections. Some radiologists speculated that this be due to injuries to the triangulofibrocartilage, but this finding had never been published in the literature.

With the financial assistance from the Rohrmann Endowment, Dr. Jack Porrino and I performed a retrospective study of MRI wrist arthrograms performed at the University of Washington to determine whether contrast extravasation near the ulnar styloid correlated with patient symptomology, TFCC defects, and other factors. We were able to establish that this finding was only correlated with right-handedness, which is suggestive of degeneration due to chronic use rather than acute injury. This data could prevent unnecessary and costly workups for patients. Our manuscript was accepted as original research by the American Journal of Roentgenology.

We are grateful for the Rohrmann Endowment’s generosity and support for our research project. Contributions to the Endowment help UW residents pursue scholarly activities and provide better care for our community.

Mickey Lee, PGY-4